My fretting hand gets cramped while playing guitar chords. Tips?!

My fretting hand gets cramped while playing guitar chords. Tips?

Does anyone have any exercises I can practice so I don't get cramped up while playing guitar chords?

Learn not to press so hard. It doesn't take much 'finger'. Try copying crazy stuff like Hendrix, where you move so fast that you don't have time to press too hard. It shouldn't be work to play any instrument; it should flow like wiping yourass. (seriously) Loose and relaxed is more comfortable and makes better music. Sounds like you're tensing up too much. You don't need to make the muscles stronger, you need to lighten their load by relaxing.