dude i honestly dont give Two piss about "data". 15% bodyfat is way healthier (Mentally as well) then 25% bodyfat. you can talk to every single Male you meet on a daily basis. this is based on Real Life experiences from Real People, not some silly standards of "ideal" numbers. i would much rather be 10% then 20%, i feel better physically as well as mentally and its easier to move around, less stress on my heart, etc. there are no health implications for being 10% bodyfat that is preposterous. and to say 10% is higher risk then 20-30% is ridiculous dude, any male who is 20 or above is Fat and has a sedentary lifestyle 9 times out of 10. or you can be a Fat powerlifter which also means you are Overeating by a large amount which isnt good either. higher fat people have more health implications like diabetes, blood pressure, heart issues, etc. and this is in addition to lack of exercise and crappy diets.. people who have lower BF have good diets and active lifestyles and 9 times out of 10 that is a healthier way of living.