Cramps

Well I been playing for a while and I been getting better. But for some reason I get cramp on my thumb. So does anyone know how I fix this?

play more!

try stretching out your thumb and working it out a bit. Sounds odd, but it helps.

I get these too sometimes, and it does hurt! All I can say is what BluesDrive said, stretch out your thumb before you play and later in time you'll get used to it.

Ive gotten this types of cramps ever since playing guitar about 5 years ago. What I do is a simple exercise. take your index fingers, and put them together, and your thumbs together. Pull your thumbs toward you while pushing your index fingers forward. Then, once the thumbs and indexes are fully extended, push the joints of the inside of your thumbs together. May sound strange, but it really works for me.