ouch, ive completely blown my legs out. I ran this evening and wanted to do two laps around the lake, yeah why not up my run 80% in one go, great idea. At the end of the second lap my right leg was having a few issues, calf cramping and thigh cramp, then pain in my knee. I did walk some of it, but I guess it was still too much. Dont remember it ever having come on so fast like this before though. I guess maybe my legs were already really tired and this just kicked them over the top. I need to keep frozen peas in the freezer!