Basic hamstring lift with stability ball

For a quick look at a way to work on hamstrings with a stability ball (Swiss ball), check out these 1-minute videos.  The third video is a seated hamstring stretch.  She mentions how to choose the correct size ball based on height because there are three sizes available.

A Swiss ball is one of the items that I find worthwhile to have at home.  Often use it during personal training sessions.

For ideas about progression if you want to make the hamstring exercises more challenging:
https://over50skifitness.blogspot.com/2016/06/hamstring-curl-progression-on-stability.html