This isn't really a question as you say I was just wondering if it happens to anyone else. When I go to stretch, for example stretch my legs, I always seem to get sharp cramp straight away and it is really painful ( especially when it happens in my toes ) and the same with when I try to stretch my arms. I was once laid in bed one morning and I was desperate to stretch as people do in a morning and I did and I think I pulled my shoulder or at least trapped a nerve in it. It was really painful for a few days and I couldn't even put my socks on. Since then I have always been careful on how I stretch in case something like that happens again, I am almost jealous of people who can stretch ( especially when they do it in front of me because I have to like half stretch)