Originally Posted by ursle

You don't mention your age, as a 20 year old this would be disturbing, as a 50 year old this would be aging, muscles don't just take up new activities, they require time to adapt, as does the "body", so if you're over 50 and this happened, it's just nature talking, if you're 22 better go see a Doctor, or see a bike shop for a proper setup of position.