People that do things professionally where the science isn't fully vetted out usually have some things to teach in this regard. My favorite example is body bui

People that do things professionally where the science isn't fully vetted out usually have some things to teach in this regard. My favorite example is body builders. There is still a lot of quackery, but I wouldn't throw everything they say out the window. These dudes are competitive and the sport is decades old, they have a good idea of what works, and that includes supplements.