[Angel]

Originally Posted by smiles07x

how do you know if your body weight is less than <85% or less then 15% body fat?

Your ideal weight would depend on your gender, age, and height, although I believe your build should be taken into account as well. Your doctor is the person to ask because he knows your health best. There are some calculators on the internet to help you figure out if you're in a healthy range or not, but I don't know how accurate they are and you should definitely not use them to self-diagnose. They are there to give people an idea of whether or not they're at a healthy point.