Fitness man says you are so thin, which means you are slender and thin. Fitness people are slim, undressed and fleshy, and their bodies will be stronger. Being too thin is not good for them.

Fitness is a kind of exercise, such as all kinds of unarmed aerobics, rhythmic gymnastics, rhythmic gymnastics, and all kinds of self-resistance movements. Gymnastics and yoga can enhance strength and flexibility, increase endurance, and improve the ability to coordinate and control all parts of the body, thus making the body strong.