Went to my doctor for leg pains. my ck level was 3483 on wendsday. today (friday) it was 8366. i have worked out since i seen my doctor. why rising?

Working out may do i: You said you did work out, and this can contribute to the rising levels. Make sure to stay in close contact with your doctor, so s/he can keep track of your progress.

Too much workout,,: It's likely you've been working out a lot lately and should really ease off on it. If you do too much too fast, it could result in a condition called rhabdomyolysis which is where muscles get broken down and kidney failure can develop. This can be serious if it isn't reversed so it's a good idea to slow down while things are still ok. Good luck.