Ok this is related to a previous post but was wondering if anyone can give advice. I usually play dubs but today played a singles with another 4.5 for a few hours. I noticed after about an hour 15min or so of hard running and playing- my legs got wobbly/shaky and felt weak. I faught through this, but ...Not a good sign. Is there a term for this? How can I get rid of this? My Arms never got wobbly or shacky like that.... What it feels like in a long point is that I'll be running to a ball and then my legs wiill act like mush and wont listen to my brain....lol. I can walk around and rest inbetween points and get better but then it can, althought not always does, happen again in a long rally.