Why are my six-pack abs not showing even though I’m skinny?

Will doing 100 sit-ups a day give me visible six-pack abs?

Can 100 sit-ups a day help me achieve visible six-pack abs?

What does 13% body fat look like on a male?

What body fat percentage is considered skinny?

Will I reduce my fat percentage by swimming two times a week?

Where do you lose fat first?

Should I lift heavy for six-pack abs to show?

Why am I not burning belly fat?

What should a woman eat to get visible six-pack abs?