I've been training for about 10 months, two gyms, two trainers. Both showed me the machines and the form, and eventually I didn't need a trainer day to day. But not needing a trainer isn't the same as never needing someone to tell you you're doing it wrong. My gym has one trainer for the whole floor, and he's usually busy with his own clients. Even when trainers are around, they don't always catch it, and sometimes they get the form wrong too. So most of my reps had no one watching I struggle with deadlifts. Every time I went heavy I got a sharp pain in my back. So I built Repchek, you prop your phone up side on, it watches you through the camera, goes red and beeps when your form breaks, counts your reps and sets, and gives you a summary at the end. I did the first real test on Monday, it flagged my deadlift, hips shooting up, head down. I rewatched my videos and it was right. I went back with less weight, adjusted, and the pain didn't come back. Then it caught my lat pulldown too, I was leaning back too far, and that took one session under a minute. What I learned, I'd been doing some of this wrong the whole time. The fix wasn't one session. I kept going back, rewatching my videos, adjusting and testing again, because I want to get better and I can't do that without knowing what I'm getting wrong. That's the whole point of it for me, find the mistake, fix it, repeat. It's new, I built it this week and have been testing it on my own workouts every day, at the gym and at home. It's calibrated to my body, so expect some mistakes on yours. That's why I'm posting, I want people to try it and tell me where it gets things wrong. Tip: screen record your session so you can rewatch your form after. https://repchek.vercel.app   submitted by   /u/1017_frank [link]   [comments]