A not-at-all-serious post... Having been a little ill with the sniffles recently (man flu, most definitely), my running had taken a bit of a hit (get half a mile, go light-headed and nearly pass out type thing). Now I'm picking up again, I went to see how my 1.5 time was. On the third lap of the field (which is kindly exactly 0.5 miles around, very thoughtful of it) I found myself still flagging, and feeling the need to yell inconsequential sounds at the top of my voice ('Yarrrggggghhhhhhh'). I then realised that I probably sounded like a nobber, and had also scared (or should that be scarred?) the dog walkers by the river. Didn't stop me doing it again though... So - power-screaming, is it ever justified? I think probably not, but I might take it up as a recreational hobby.