If you are active in any way, you should be rolling out your muscles. The first time I tired it, it was like hell! So I stopped and didn't do it again for so many years! When I begin to get into skipping and long distance running earlier this year I ended up really hurting my knees. To the point were I couldn't get up and down my stairs at work! I went to a physio and found out that my ITB and quads were tight. The ITB runs over two joints, it starts above your hip runs all