Lots of good answers. It may pay you to get a physical, or a least a blood draw. It is possible that you have blood related issues which need resolved first.
If you have an electrolyte imbalance, your muscles just won't work properly. Could be too much or too little of potassium, calcium, sodium, etc. Each electrolyte has a job to do, and if there is an imbalance in any way, the muscles aren't nearly as efficient. Most of us get a lot of sodium, so I doubt too little sodium is the culprit.
If you drink milk on a regular basis, I bet you get enough calcium. As potassium and sodium do their electrical thing and sorta swap charges, the muscle can contract and relax. My guess is that you don't have enough potassium in your diet. your muscles are told to contract, but, because the +/- electrical charges are not in proper balance, your muscle will take time to relax.
Gatorade, bananas and water should fix it....but, make sure your MD is aware of what is going on.
Here is some info on how muscles contract and relax.
http://k-rosen.suite101.com/how-does-muscle-contract-a86853
>Hey guys and gals, I
>am lookin for a supplement
>to take that will help
>me with my cramps.
>I always cramp in the
>same spot which is the
>inside of my legs just
>above the knee. Gatorade
>seems to help some but
>not enough. This only
>occurs after a long hike
>and when packin out.
>Please help me rid myself
>of this issue. Thanks
>
Compromise, hell! ... If freedom is right and tyranny is wrong, why should those who believe in freedom treat it as if it were a roll of bologna to be bartered a slice at a time?