is slowing down your muscles to protect you from permanent damage. Cure The damage is done – just slow down.BLISTERS Ouch Your feet sting and burn. Science Friction between your foot and your shoe or sock rubs skin raw. Moisture makes it worse

Your feet take 18,000 steps every day on average. When you run you'll add to that figure, as well as the amount of perspiration produced by the 250,000 sweat glands on each foot. With stresses like that it's no wonder your feet complain from time

. The most likely cause? Very long runs in ill-fitting shoes. "There should be 1cm between the end of the shoe and the longest toe, with the toes neither crowded nor slipping around," says Prior. The toenail may fall off, or grow with a horizontal ridge

is not what you need close to bedtime. Meadows advises increasing your mileage by no more than 10 per cent a week, and avoid training within two hours of bedtime.Action plan: Avoid training 2 hours before sleepIf you do choose to go out running

, just like the finger-nail ones. They looked great all summer. See full threadBuy bigger shoesSuz - My second toenail is purple and about to fall off from my last pair of running shoes! I have just bought new shoes 1/2 size bigger and have had

appropriately, which means 150-350ml of fluid – preferably a carbohydrate drink – for every 15-20 minutes of running. To do this, take your favourite drink on the run, or stash it along your route. And sniff out all the available water along the way – and use it

can take days off." And don't try to beat your run-to-work PB. "This will add pressure." Mix it up Running a different route everyday will keep you motivated. Go to sustrans.org.uk to find 12,000 miles of traffic-free routes near you. Come up