This machine is the equivalent of 20k sit-ups in 30 mins. Full protocol on my profile
2 Apr 2023 · 1 min

0:43
Bryan Johnson runs a specialized core machine at maximum settings, claiming it delivers 20,000 sit-ups worth of work in 30 minutes. He says his midsection is dramatically stronger and he feels little soreness despite the intense pulling sensation. He warns beginners to stay away.










