It's been a while since I have posted on this forum, but I have a questions. Does anyone's knees turn purple when training their legs? It doesn't hurt at all, but I have never seen my knees do this before. Just below my patella, a round spot (about the size of a silver dollar) turns bright purple. I'm guessing this is from lots of blood flow through the popliteal artery?
Should I be worried about this? Its so noticable that other people in the gym stop me to ask if something is wrong. I am in graduate school for exercise physiology and so far non of my professors have any explanations.
Thanks for you help.