night time leg cramps
[I know people are going to say "potassium", but it's not potassium. I've had 3 blood tests in the last couple of months checking my potassium levels, they are fine]. I've started taking magnesium supplements, but they don't seem to help either.
So I've been finding I get night leg cramps on the day(s) following especially lengthy aerobic exercise (stair mill/elliptical). It seems pretty replicable that if I limit my workouts to 45 minutes or less, I'm fine, but if I go to 50-70 minutes, I get cramps.
Any suggestions on how I could change my routine to get in longer workouts, and avoiding the cramps?
Thanks