Exercise actually helped my symptoms go away completely and I've been remission for a year and a half now. I was diagnosed at the age of 20.
I started with just daily activities (showering, walking around the house, light cleaning, etc) I couldn't hold a job yet so getting out of the house and being outside in the sun did wonders for me. I then progressed to walking on a treadmill and eventually I was able to stop all my medications.
Everyone deals with their fibro differently so work with your dOctors to see what works best for you
