Tongue Cramps from Eating Pussy??

My boyfriend and I both have higher sex drives, we probably have sex just about everyday. Obviously we both dont just hop straight into sex everytime, 9 times out of ten, he'll eat me out. I absolutely love it and hes amazing at it. However recently, hes been getting tongue cramps from giving me head just about everyday. Is there a way that you can combat tongue cramps or a way to stretch them out?