What causes cramps?

[Kalos]

I do 30 minuted of cardio after my workouts. Sometimes I can do 30 minutes of cardio no problems but sometimes I get bad cramps on my quads and calves and can't run. One time it was so bad I almost fell off the treadmill because my quads locked up What can I do to prevent cramps? I drink plenty of water and warm up the first five minutes before I start running. Thanks!

 

[Japanese machine]

from the top of my head; dehydration, lack of muscle glucose.

 

[Mike P.T.]

Yes as well as lack of an overall electrolyte balance.

 

[Never Enough]

What about potassium? Try eating a banana.

 

[apbt549]

PMS...............

 

[drveejay11]

Potassium