Well, do a little trick for me...sit down comfortably with your legs hanging over the edge (your knees should be bent like normal). With the leg that has the cramps, straighten your leg in front of you....wait a few seconds....now point your toes towards your body. If you feel any discomfort in this position I would suggest (Again, my suggestion only) that you go and see a doctor. There could be serious underlying problems causing these cramps