20-Inch Thighs by Body Fat Percentage
Both men and women store body fat in their thighs, although women tend to store more here. So, the more body fat you have, generally the larger your leg circumference will be.
Some people might not care if their legs are composed of fat or muscle. But bodybuilders, athletes, or anyone going for a fit/healthy look, should strive to have relatively lean and muscular thighs.
For one, having more muscle and less fat makes your legs more defined. For example, you can see the separations between your quads, hamstrings, and glutes. And sometimes even the muscle striations and veins.
In addition, being leaner makes your thighs look bigger compared to your leg joints (ankle, knee, hip) and your waist. Of course, not everyone wants to have shredded legs, but too much fat on your thighs isn’t healthy.