What is the cause of heavy legs and cramps?

I do not know the medical reason for it -- but my mother developed an allergy to alcohol and if she had the smallest amount she would have terrible cramps. I seem to be developing the same thing. ...

a lot of things could cause this..diabetic neuropathy, or blood clots, muscle atrophy, low potassium..get it checked out by a doctor. I found I would get leg cramps when I had over- or underexerted...

Potassium is a key electrolyte in muscle contraction. So if your potassium levels or low or high it can cause cramps. Sara, RN

the cause of leg cramps is the tightening of the muscles in your leg and it really hurts it is painfulit can wake u up in the middle of the night and it is not pleasant

Not Stretching before exercises or workouts.