Men need to be at 20% body fat to see abs, while women need to be at 28% to see a tighter waist.

Men typically exhibit higher body fat percentage in the abdominal region compared to other body regions.

For men, body fat exceeding 25% results in the abdominal region becoming the preferred site for fat storage, making it both easier to gain and harder to lose fat in this area.

To see abdominal muscles, a person needs to have a low enough level of fat over the abdomen and enough muscle mass in the rectus abdominis.