2. Put your hands on your thighs.
3. Gently arch your back, rolling your shoulders and leaning forward slightly.
4. Hold the stretch 10 to 15 seconds.
Stretching makes your muscles and joints flexible, preventing injuries, and stopping your muscles from cramping. Flexibility allows you to move your muscles through their full range of motion. That helps you jump higher, reach further, and run faster.
More stretches for young women and young men.