cause nervousness that prevents sleep. You need to take it regularly to really see the benefit; go to a health store and get the proper stuff. Magnesium-rich foods include kelp, wheat bran, almonds, cashews, blackstrap molasses and brewer's yeast

flow and oxygen use. It takes about 20 minutes for your body to regulate its fuel type and settle into a routine of clearing away lactic acid, using oxygen, replenishing energy stores etc. If you don't warm-up prior to a race or training session, you

This week's question was emailed to me by forum member Little Lizard, who has taken barely a single rest day in years. She reckons gym work is enough of a rest for her legs, but could she be overdoing it and storing up trouble for the future