First of all, I just want to say how happy I was to find this website. I haven't been diagnosed with anything yet but feel confident that I have BFS. I've had a few months of worrying about ALS but don't show any other symptoms associated with that disease (atrophy, weakness). I am 38 and have been experiencing twitches all over for about 4-5 months. I have had shakiness in my muscles for as long as I can remember...early 20s for sure. Some days are worse than others...some days hardly at all. My question is that all though I can get fatigued easily at times, I have started exercising regularly for about 2 months (jogging, lifting weights) and have no problems doing this. I mainly started this to prove to myself that I wasn't getting weak...stupid huh. I have read that some have exercise intolerance. Is anyone else able to exercise okay without any major problems?