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.

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