YOUR COACH JAY MARYNIAK
Whether you never stopped training or life knocked you off track — our bodies change as we age, and our training needs to change with it.
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For years I trained like most guys — heavy, high volume, push through everything. I got strong, built muscle, had a good physique. I was also beat up constantly: injuries, exhaustion, joints paying for every PR.
Eventually that stopped being sustainable, so I built something different — not a program for going easy, but a system for training hard, building real strength and muscle, and staying athletic while still moving well ten years from now.
Here's what else you should know. I walked into rehab at 20 — opioids, crack, alcohol. I got sober in 2005 and I've been sober since. At 28 I was diagnosed with Type 1 diabetes, adding a whole new layer to staying in shape. I started at 145 pounds with no muscle and built everything from scratch.
I'm telling you this because whatever you're carrying — the years off, the injuries, the body that's been through it — I've been there too. I built this method to work from exactly where you are.
Most programs hand you a PDF and wish you luck. The JTM FIT App is a complete training system — structured programs, fresh weekly workouts, nutrition, mindset, mobility, and technique tutorials, all in one place.
Every Sunday at 7 AM, a new week of Daily Workouts drops — the exact training I'm running, built on The Functional Method. No planning, no guessing, no generic workouts. Just open the app and go.
New here? Start with Movement Mastery (8 lessons on the fundamentals), then pick your path: Rebuild (coming back from injury), Build (strength + visible muscle), Performance (athletic output), Mass & Power (serious size), Full Body (3 days/week), or home options like Kettlebell Shred, Dumbbell Shred, and Bodyweight Burn.
Beyond the workouts, you get Nutrition, Mindset, Mobility & Recovery, and Technique libraries — everything that affects your training outside the gym.
This isn't a program. It's a whole system.
The Movement Mastery Course
The Functional Method Daily Workouts
Functional Method: Rebuild
Functional Method: Build
Functional Method: Performance
Functional Method: Mass & Power
Functional Method: Full Body
Functional Method: Push Pull Legs
Functional Method: Kettlebell Shred
Functional Method: Dumbbell Shred
Functional Method: Bodyweight Burn
Functional Method: Core
If it doesn't work, cancel right from your profile. Takes 30 seconds. If it does — and it will — you'll wonder why you waited. One subscription. Every program. Fresh training every week.
I started with The Kettlebell Revolution 8 week program then went right into The Kettlebell Shred 8 week program. From the beginning of the first program I was 255 pounds with a body fat in the mid 20's. Today I'm 217 pounds with a body fat of 14%. Thanks for all of your help and guidance!
For a guy who has played soccer all his life before rupturing my ACL/Meniscus, I did not know what to do after. Jay’s Functional Method 1.0 program gave me a platform to build muscle, get stronger, leaner and be faster. I have added 7 pounds of muscle and lost about 6% body fat and I'm pumped with the results!
The 6 week dumbbell shred program was a great jumpstart to get me back on track with my fitness goals. I'm looking forward to entering this summer strong and lean as ever! As a cancer survivor, Jay's workouts and diet plans give me confidence to follow and maintain a healthy lifestyle. I'm grateful that I discovered your awesome programs!
Hi, JTM! Just wanted to say THANK YOU. I finished the Functional Mass and Power program and I couldn't be happier with the results! I thought it would only help me recover after the lockdown muscle loss, but I had no idea it would get me in the best shape ever!
I started at 250 pounds and now weigh 185. For the past year, I’ve followed Functional Method: Rebuild and Functional Method: Full Body. The structured programming, coaching videos, and exercise notes made training simple, helped me build confidence in the gym, and allowed me to completely transform my body. Thanks Jay!
I loved that the Functional Shred program incorporated strength training, explosive movements, core and bodyweight workouts that built muscle and burned fat in under 45 min. I appreciated Jay's thoughtful warmup and cool down sequences to bookend the workouts with intention to promote longevity for athletes like myself. Very happy with my results!
The 6-week Dumbbell Shred program pushed me past my limits, but in a good way! I left my comfort zone in the dust and saw a major improvement in myself physically, mentally, and emotionally. I will be completing as many of your programs as I can. My goal is to look like you and have the strength and endurance to match it. Thanks, Jay!
I decided to commit to the 6-week dumbbell shred and give it my all, and I’m so glad I did. I finally broke through a plateau on the scale but also leaned out more and lost inches (finally!). Got back into a favorite pair of jeans even that I haven’t worn for over 2 years! I saw results and had fun doing it. On to the next JTM Fit program, thank you!!
Hey Jay- thank you for everything you do for your community. You've helped me a lot both mentally and physically. I'm into sports since I was a kid but when hitting the gym, I used to train the classic way. When I found you, my lifestyle changed completely. I just finished the Functional Shred program and I'm so damn proud and satisfied with my results!
10 months ago I started training with Jay's programs. This is my 1 year transformation. Jay's Bodyweight Beast program combined with a diet (6 days a week) and not drinking alcohol anymore has truly been a life changer for me. I haven't felt this good in a long time both mentally and physically. Thanks JTM!
I can honestly say The Functional Shred is the first workout program I've ever done while following proper nutrition and let me tell you that I absolutely loved it. It taught me to be disciplined and have self control. I saw great results yet still have more room to grow and learn but I'm looking forward to the journey.
The 6 week shred was just the kickstart I needed to get back on track. But the best thing for me was the community. I’m pretty sure I would have taken a lot of days off if it wasn’t for the atmosphere of the group. The food plan and recipes are great. Loads of variety and choice, but best of all, delicious! On a personal note, I lost 8 lbs which I’m really happy with!
Hey JTM! I wanted to share my 1 year transformation with your programs. So, from 103 kg to 88 kg with great training and discipline regarding food I managed to improve my overall resistance, body strength, and of course the physical appearance changed also. Love what you’re doing. You’re a great inspiration, please never stop, you are great!
The fact that the Kettlebell Revolution program was able to be done at home made it even more fun for me as my daughters would get involved and they would look forward to daddy’s workouts every day. I built some muscle and lost 20+ pounds! I am so grateful I found JTM fit and his programs.
This was by far the most fun program I've ever done!. The Functional Shred was not only fun to do but I have gained strength, improved mobility and core strength! I had a C section four years ago and my abs have been the most difficult thing for me to improve after the surgery. I finally have a six pack! Very happy with my results!
I was tired, eating poorly, and thought I didn't have time to get a decent workout in after my long work days. Since starting The Functional Shred two months ago I have a completely different understanding of what you can accomplish if you work hard enough no matter how little time or energy you may think you have. The Functional Shred program is different, refreshing, and shows you a different perspective on how to reach goals.
Just finished The Functional Shred and absolutely loved it. My key takeaways were that it brought some much needed intensity back into my workouts, got me focusing on form more than I had been, and got me into the habit of doing proper warmups and cool downs, which no doubt is the reason I remained injury free for the last 8 weeks. Managed to shed some body fat but still maintain my starting weight of 173 Ibs.
Loved it!! The 6-Week Dumbbell Shred program did everything it claimed to. More than satisfied! Ty!
A little over a year ago had shoulder surgery. After surgery I was having a difficult time getting my fire lit again. was a collegiate athlete and avid gym goer before my surgery. I'm on week 5 of The Functional Method 1.0 and I'm hooked. I haven't skipped a day and finally have my fire back. Can't wait to crush 2.0 and 3.0. Thank you Jay!
Went from 196 lbs to 188 lbs and felt like I was able to keep muscle mass and shed some body fat. Nutrition was key for me and of course all the support from the community. The 6-Week Dumbbell Shred program was exactly what I needed to boost my training and eating habits. Skillfully designed Jtm_fit!
Just finished up with The Functional Method and I couldn't be happier with the progress I've made. My body fat percentage went from 11% down to 7% while maintaining the same weight. More importantly my mobility improved drastically. I knew it was something that I needed to do but your program helped me hone in on it. Thanks for the killer 8 weeks!
Before and after The Functional Shred! I really got a lot out of this program! My goal was to get stronger without gaining any weight and I definitely accomplished that! I feel much more powerful and lighter on my feet than did 8 weeks ago. This is the strongest I've ever felt going into ski season. Can't thank you enough, Jay!
Just finished method 1.0, with a few diet changes and 8 weeks of work down 22 lbs. Finished much stronger, but also ended up with better cardio and flexibility! A must do program if you’re if looking to get motivated and change the way you have been exercising!
I've completed The functional Shred and now I'm on my 7th week of The Functional Method 1.0. My goal was to lose 15 pounds and get under 200 lbs. Here is my journey. I weigh 199 lbs and I'm ready to go into a maintenance phase until I'm ready to go hard again! Thanks JTM FIT! Your programs have kept me motivated longer than any other internet training programs that I've done!
I will be 37 years old at the end of the month and my biggest accomplishment from this program is to have my 17 year old son say to me "Mom, you're such a bad ass and a great role model to me". Throughout this program, I was able to challenge my mind and body to do things didn't know I had in me. I am mentally and physically stronger and learned so much.
The left picture was taken the day l started 8 weeks ago and the pic on the right was taken after the final workout of the program! Changed my diet slightly but nothing extreme. This program tested me physically and mentally! Consistency is the key here! I only missed two of the workouts. I put in the work and I saw results! I've never been in such good shape!
Just finished The Functional Shred today. 8 weeks later I’m 20 pounds lighter. Better, faster, and stronger. This was a life-changing experience!
Because the gym's are closed again in Montreal I wasn't able to finish Functional Mass and Power but I wanted to share my results after 2 months. My weight stayed the same but my body fat went from 17.6% to 13.5% at 230 pounds. I've never been able to get under 17% until doing this program. Can't wait to finish!
This is totally out of my comfort zone. Not a big social media poster. We did a thing and I'm proud of it. Down 8 pounds with the 6-Week Dumbbell Shred program. Still have goals I'm looking to work towards but I'm happy with my progress. I really enjoyed the challenge. I was exhausted and I left the gym on a high each day. Exactly what was looking for!
In the beginning of the year I got COVID. I couldn't workout for a few weeks and got into some bad eating habits. I needed a reset, so a got the JTMFIT Kettlebell Shred. I have loved the program!, I have leaned out, increased muscle endurance, improved my kettlebell technique, and I have a stronger core. Thanks for another great program, Jay!
Hi, My first post ( Before and After) I started The Functional Method 1.0 in April to lose the extra weight gained after delivering a baby. With a diet plan I lost 6 kg by July. Body fat from 27% to 21%. Now doing The Functional Method 2.0 and I've never trained like this before. From 0 push ups to 10 push ups!
I had a set back and gained some weight...20 lbs to be exact. I have been doing your programs, functional Shred (twice), functional mass and power, functional method 2, and functional method 3 (currently on). I’ve lost all the extra weight had gained last year. Did not realize I made this much progress visually too. Just wanted to share. Thanks!
Your body is built to move in 8 fundamental patterns. Most programs don't train all 8 patterns, let alone all planes of motion. Quite often programs only move in the sagittal plane — forwards and backwards — completely neglecting side-to-side and rotational movement. Those gaps are exactly where injuries happen, performance stalls, and results stop coming. The JTM FIT app trains all 8 functional patterns in all planes of motion — every week, across every program.
Just like skipping movement patterns leaves gaps, so does training for only one quality. Strong but stiff. Muscular but slow. Real results come from training all five pillars together — Strength, Muscle, Power, Mobility, and Conditioning. That's the Functional Method, and it's built into every program, every week.
Heavy compound work, close to failure, with the rest needed to actually recover between sets. This is the foundation. Without raw strength as the base, everything else — muscle, power, athleticism — has nothing to stand on.
Compound movements to build and maintain muscle mass, paired with Secondary Muscle Builders — exercises that don't just add size but improve athleticism, explosiveness, balance, and stability at the same time. Most programs train one or the other. This one trains both.
Explosive movements trained every week across every program. The ability to generate force quickly is what separates actually training from just maintaining — and it's the key to feeling athletic again.
Most programs treat this as optional. It isn't. Every session has a structured warm-up and cool-down built around what you're training that day — and dedicated mobility work is programmed into every week. The difference between a body that holds up and one that slowly falls apart.
AMRAPs, EMOMs, Tabata circuits, and finishers built into every session — plus dedicated cardio and conditioning days every week. Not cardio for cardio's sake. A stronger engine, better heart health, and the capacity to sustain intensity and hold onto your results long-term.
20+ years sober. Type 1 diabetic. 17+ years coaching. Under 10% body fat in my 40s.
I started at 145 pounds with no muscle and no idea what I was doing. I tried everything — Muay Thai, BJJ, CrossFit, marathons. I competed. I won. And I beat my body into the ground doing it.
The injuries and the burnout forced me to rebuild from scratch. What came out of that is the JTM FIT method — a complete system built for guys who want to train hard, stay athletic, and actually still be able to move well ten years from now.
10,000+ programs sold. 2M+ followers. Built by someone who's done the work.
Whatever you're carrying — the years off, the injuries, the body that's been through it — the system is here when you're ready.
— Jay
Start Your Free 7-Day TrialMost apps give you a library of workouts and leave you to figure out the rest. Most workouts are incredibly generic and are probably created by AI. Not at JTM FIT. The app is a complete system — structured programs, a progression path, fresh weekly programming, nutrition, mindset, and mobility — all built around one cohesive method. Jay has a huge passion for programming and spends hours every single week creating the best workouts that deliver the best results.
Definitely not. The method is built for people who already know how to train — but have hit a wall. The programs assume a baseline of experience. If you're expecting total beginner content, this isn't it. And if you're coming back from an injury or a long layoff, the Rebuild program is built specifically for that — restoring movement quality and rebuilding capacity before pushing
intensity again.
Both. Some programs are built for a gym or a well-equipped home gym with barbells, kettlebells, and dumbbells. Others, like Kettlebell Shred, Dumbbell Shred, and Bodyweight Burn, require nothing more than a kettlebell, a pair of dumbbells, or just floor space. Whatever your setup is, there's a program in the app built for it.
Obviously, all injuries aren't created equal but all programs inside the app can be modified to meet you where you are currently at. The Rebuild and Full Body programs are two of our best for those that are trying to get back into training and build yourself back up.
Sessions generally run 45–60 minutes. With that being said, Jay has dedicated videos in the start here section explaining in detail how those who are newer to training and or have minimal time can modify the workouts and programs to meet them where they currently are.
Yes, absolutely. Cancel anytime directly from your profile in the app. Tap on your profile then tap on manage subscriptions. Takes 30 seconds.
The Kettlebell Revolution is a full-body, kettlebell and bodyweight program that will put you on the fast track to gaining functional strength, building muscle, and shredding that unwanted body fat using just a few pairs of kettlebells!
8 WEEK PROGRAM
BUILD MUSCLE & SHRED FAT
KETTLEBELLS & BODYWEIGHT
45 Minute Workouts
If you are someone who is looking to gain raw functional strength, build muscle mass, improve power and explosiveness and take your athleticism to the next level, then this is absolutely the program for you!
12 WEEK PROGRAM
BUILD STRENGTH & MUSCLE
FULL GYM
60-75 minute workouts
The 6 week SHRED is a full body, dumbbell and bodyweight program that will put you on the fast track to gaining functional strength, building muscle and shredding that unwanted body fat!
6 WEEK PROGRAM
BUILD MUSCLE & BURN FAT
DUMBBELLS & BODYWEIGHT
45 minute workouts