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zakruti.com » Sport, fitness, workout » Jeremy Ethier
What 100 Days Of Dumbbells Does To Your Body (INSANE Results)

What 100 Days Of Dumbbells Does To Your Body (INSANE Results)

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Get FREE 2-week access to smarter fat-loss training with the BWS app: Click below to subscribe for more videos: Can you really build muscle with a dumbbell workout, a bench, and no gym membership That’s the challenge I gave my brother-in-law, Dayton, and the results might surprise you. Dayton isn’t a bodybuilder, an athlete, or a fitness influencer. He’s just a regular guy who skips the gym because life’s too busy or gyms are too expensive. His diet was whatever was convenient, his body fat had climbed to 32. 5%, and his visceral fat was at a dangerously high level. He didn’t just need to get in shape, he needed to reclaim his health. So, I gave him a simple challenge. Gain muscle and lose fat with a home workout setup that cost less than $200. Follow a dumbbell only workout for just four days a week with two dumbbells and a bench. And follow a diet plan that replaced hidden calories with smarter, leaner swaps. Most people believe you need endless machines and heavy barbells to build muscle. The truth With smart programming, you can get jacked at home. Dayton’s routine targeted every major muscle group: Chest: Incline press (upper chest) and flat press (mid and lower fibres, customized to his sternum angle for maximum growth. Back: Chest-supported dumbbell row and single-arm dumbbell row. Shoulders: Dumbbell press (front belts, reverse drop set lateral raises (to push past failure) and leaning dumbbell raise to mimic cables. Arms: Incline curls for upper biceps, preacher curls for lower biceps and brachialis, plus overhead extensions to grow the long head of the triceps. Legs: Wide-stance Bulgarian split squats (glutes, narrow-stance Bulgarian split squats (quads, Romanian deadlifts (hamstrings, reverse Nordics, and sissy squats (the last 2 for the rectus femoris. Every dumbbell workout session was tracked inside the Built With Science app so Dayton could see real progress week after week. If you want to gain muscle and lose fat, training is only half of it the other half is diet. Dayton’s old meals were loaded with butter, fatty steaks, and mindless snacks like Chicago Mix popcorn. The problem wasn’t one ribeye or one bowl of popcorn, it was the volume. Day after day, those extra calories pushed him further from his goals. We swapped in leaner cuts of meat, cut down invisible oils, and replaced empty-calorie snacks with higher-protein options. These simple swaps slashed hundreds of calories per day without making him feel deprived. That’s the secret: you don’t have to give up food you love, but you do need to be strategic. The hardest part of Dayton’s dumbbell-only workout transformation isn’t the exercises it’s showing up. Dayton faced a layoff and days when everything seemed to go wrong. There were moments he wanted to quit. But he discovered the most valuable lesson: you don’t wait for motivation; you build discipline. On the days he least wanted to train, those sessions ended up mattering the most. After 100 days of following the home workout plan, Dayton hit a wall. His 50 lb dumbbells felt too light on presses, rows, and squats. Most people would assume that’s where home training stops working. But this is where we used a technique called pre-exhaust. Here’s how it works: he’ll start with an isolation move like the dumbbell fly and take it all the way to failure. Then, without resting, he’ll switch to a heavier compound lift, like the dumbbell press. But because his chest is already fatigued, his chest will be able to reach failure without needing super-heavy weights. Earlier this year, I actually helped run a study comparing pre-exhaust to traditional training. Traditional training did have a slight edge, but the gains were nearly identical, and you can make up the difference just by adding an extra set or two. After 150 days, the results were undeniable: 26 lbs of fat lost, 7 lbs of muscle gained, body fat reduced from 32. 5% to 23. 5%, and visceral fat cut by 70%. This wasn’t a quick-fix or gimmick. Dayton proved that you can build muscle and lose fat without a gym. But it requires structure, consistency, and the willingness to push through plateaus. Ultimately, Dayton’s journey is about more than numbers. It’s about proving that no matter where you start busy schedule, limited equipment, or financial struggles you can still transform your body. You can still take control of your health.
Date: 2025-09-01

Comments and reviews: 20


I have been working with the same setup (basically a bench, dumbbells and resistance bands) and I chose all of my exercises from your videos over the past 2 years and had quite good progress. I also changed my diet and removed almost all fat and sugar from it while adding lots of protein.
The diet change stuck and has been great, but staying motivated to exercise while having other things in life that also need my focus (new work, hobbies, relationships) is very difficult in the long run. Basically the exact same thing that happened to him in the video. Really great that he stuck with it and the results speak for themselves.

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Love this content and great story telling for someone with average build to reach their goals. I have one question about the app, does it account for equipment you have I have similar setup of 50 lb adjustable dumbbells and would like to know if the app will adjust my workout after i cap out on my weight and do the prep exhausted muscle exercises for me to keep using the same equipment. And shoutout to Dayton for keeping going with he’s circumstance. I’m in the same boat and watching you over come your struggles give me hope. Wish you guys best of life.
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Finally a realistic time to actually notice a visual transformation. Those on month transformations are just useless. Almost nothing is happening visually in 30 days. But in 5 months you can expect to see something as shown here.
That people expect muscles to change visibly in 30 days also shows how unrealistic their expecation is. They expect too much in too short of a time. If you really want to see something you should train for a year and lose weight. Consistency is much more important.

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Of course. you gotta actually do the work. the reps. but what this video also really clearly illustrates is that having a friend or coach or BROTHER-in-LAW that actually cares about you and motivates you and encourages you--and mentors you--can be unbelievably life changing. Now. all he needs to do is add a couple of short runs and/or bike 20 to 30 mile bike rides to his fitness routine every week. and he will DEFINITELY get even MORE ripped.
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great video. part that i think is important is individual variability in structure. Advice to workout for your specific body is pretty important in preventing injury both short term and long term. I definitely remember the shoulder clicking back when i first started and difference it made figuring out that my shoulders just weren't meant for that form of shoulder push and find a modification that did work.
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Hi Jeremy, thank you for putting out this great content. I feel inspired after watching this video. I have chronic inflammation however, painful joints and inflammation that sometimes make exercising painful. Can you recommend home equipment and the best exercises for people like myself feel free to DM me and I'm curious about signing up with you for personalized help with my fitness goals. Thank you!
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AMAZING video! It took a lot of work. You have come a long way since the white house stairwell videos. I've been a client for over a decade. Your program has heled me lots especially after my bypass surgery. Gyms in my area are too crowded, so home gym is best for me. Adjustable weight dumbbells, a bench and a pullup bar keep me fit and your app makes tracking and motivation a breeze.
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I quit working out but used mostly dumbells only when I became active again there are occassional actual gym days after my frist year when things get really boring, but maybe 1 - 2 times a month only sometimes no gym days ina month. I recovered size even grew a little and was able to compete in my first mens physique after 2 and a half years of training again.
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If he loves steak with butter, he should really look into trying a keto carnivore diet. Visceral fat will self-cannibalize, nevermind all of the other cool perks like higher visual acuity, drastic reduction in body odor, no more bloating, flatulence and feces don't stink any more, and snacking on empty carbs doesn't feel particularly gratifying any more anyway.
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6: 00 I would not recommend lifting heavier in this range of motion because it could negatively impact the rotator cuff. The supraspinatus tendon is primarily activated during this 0 to 15 degrees of abduction, where it acts as the main muscle to initiate this movement. Beyond 15 degrees, the deltoid muscle takes over as the primary mover for further abduction.
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On the days he wasn't 'feeling it', (I am not a trainer or anything, I was glad you gave him the option to 'take a pause' - but also could have encouraged him to go for a long walk. I can't remember if I saw a dog, but a neighbors dog always needs a long walk 'on the wild side'. Plus a pet is calming. He had a clean garage - that was a blessing in itself.
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im 100% honest that these videos all contradicting each other make me wanna K myself. Like. literally. Ive been working out for 8 months straight with little to no results because you guy say something then someone else contradicts it, chatgpt says whatever the fck it wants and most of us cant afford a personal trainer.
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Wait. You talked about bicep exercises, when I paused on the full plan, I didn't see any included there. Was he getting all the biceps work he needed through the other pull exercises he was doing or were those just not visible in the screenshots that were shared
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This video needs to be seen by basically everybody. Jeremy, this was the best video you have ever done and the honesty here the realness the results. The list goes on this was absolutely inspiring to watch. wow. ty. BOTH for your work and dedication and tenacity
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When he said the guy had been struggling with shoulders I was praying to the heavens he would mention the clicky shoulder. OMFG why has nobody ever told me this. I've been neglecting my shoulders so badly. Can't wait to get in gym and try this out.
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So I just watched this video and that’s pretty much me and my working out, I have a bench that inclines and 4 sets of dumbbells! And I really needed to know what I’m doing wrong or need to change! Plus I’m 58 so time is of the essence
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I’ve been following you for a while, love your content. THIS is the best video I’ve seen. Very heartwarming and inspiring. Dayton showed that grit and drive (even through real-life stress. Your support and knowledge was the fuel. Kudos!
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In my experience, it’s hard to find a replacement for a pull-up bar. So my home gym is adjustable dumbbells, adjustable bench, a pad on the ground, and a pull-up bar. Technically an iPad as well because I use an interval timing app.
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Omg brooo you're just making him unhealthier bro. Eating fat(butter) won't make you fat. And the visceral fat is from the fructose, so he should cut out plants with high fructose and packaged shit with fructose syrop.
Poor man

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Tip for 12: 00, when you are miserable doing some high intensity cardio can help a lot to boost your mood and is also in line with your goal of lowering bodyfat. Maybe play soccer or basketball if running is too boring for you.
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