66 DAY RULE

Mental fatigue can limit performance before your body reaches its true limits, making effort feel harder than it actually is and causing you to slow down sooner. Research shows endurance drops even when physical markers stay the same, meaning the brain is often what’s holding you back, with 86 percent of studies showing reduced performance under mental fatigue. This is where discipline and habit come in.

 

Studies show it takes around 66 days to build a habit, meaning the more consistently you show up, the less you rely on motivation and the less power mental fatigue has over you.