@shortstories skinny and 40% are contradictory
50 kilograms and 40% body fat is 20 kilograms of fat
70 kilograms and 40% body fat is 28 kilograms of fat
100 kilograms and 40% body fat is 40 kilograms of fat
If they are the same height and limb lengths
50 Kilograms is more skinny than 100 kilograms but can be the same percent body fat
Someone who is skinny and has a high body fat percent is not very muscular but is also skinny because they do not have very much fat either. But the ratio of fat to muscle is high
A man can have a waist with a small circumfrence and arms and legs with a small circumference and be 40% fat because a man can potentially have so little muscle