At home Everyone
HardAbout 5 minOn your own
Kneeling and lowering the body forward as slowly as you can with the hamstrings. One of the best exercises for preventing hamstring strains when sprinting.
Video: Muscle & Strength
Also: With a band to help
Kneel on a mat with your body upright and a partner holding your ankles down (or heels hooked under something heavy and fixed).
You need: A partner (or something heavy to hook your heels under) and a mat
Hold a band anchored above and behind you, or a smaller range.
Lower more slowly and pull back up without the push.