1, the main purpose of fitness is to exercise the heart and lungs, strengthen muscles and improve people's quality of life.

2. The main purpose of skipping rope is to exercise calf muscles and heart and lungs, and the thighs and upper body are basically not exercised.

3. Suggested actions: Push-ups exercise the upper body and core muscles, squats+lunges exercise the thighs and waist, and Bobby jumps to exercise the whole body and heart and lungs to see your own physical condition.