Lean, Fit, Strong and Energetic…HOW TO work out the truth from the “BS”

Lean, Fit, Strong and Energetic… HOW TO work out the truth from the “BS”?WHAT if there is a FASTER way? WHAT IF everything we believe/think is true about being healthy, fit and strong is wrong, or there is a better way? I want to know, what about you? So how do we KNOW for ourselves instead of trusting opinions, “experts”, AI/robots, Dr Google or social media influencers?