How important are warm-up and cool-down exercise?

Answer:
you need to stretch before sport or games because:


muscles work best when they are warm, a sudden stretching of cold can damage it, it is best to warm up with stretching exercises and gentle jogging before doing anything strenuous.
First answer by ID1144142429. Last edit by Little Mouse X. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 1 [recommend question].