am a 27 year old male 6 2 200 lbs, I have dull aches that come and go in my arms legs and upper back, almost like I just worked out, you know that tight lactic acid feeling. Thing is I haven't just worked out I also noticed the muscles in my upper arms and upper legs twitch randomly. I have not experienced any loss of strength or menuverablity and its by no means debilitating buts its just dull aches that come and go. I don't present any other symptoms. What can this be?