Many of us remember trying to touch our toes by bouncing down, a little further each time. This type of sudden movement can allow you to stretch a little further, but from a fitness perspective it’s not beneficial. In fact, the danger is a matter for concern.
When one engages in ballistic stretching, they are putting an undue strain on whatever muscles and tendons they are stretching. Rather than building flexibility, this can actually cause muscles to tear or tendons to weaken.
Far better to stretch gradually and evenly, building up the muscle’s natural flexibility, and ensuring that no injury will occur.