After 7 weeks off Metformin, Bryan Johnson experienced a 25.6% improvement in average cycling power over his previous personal best.

“A longevity staple in my protocol for 5+ years.”

“We’re now cycling Metformin, which should give me the best of both worlds, mitochondrial build-up and optimal use.”

“I’ve been on Metformin for four years now, taking 1500 mg daily.”