many tummy troubles if I eat before hand, even if I leave it for a few hours. I did my last marathon on a cup of tea and some greek yoghurt with honey. – Hazel AdamsI run about 18 or 19 miles on Sunday mornings on a completely empty stomach, not even a

'Nanas are the devil's food before running – sends my tummy all funny. Bleurgh. Small handful of raisins and a square of dark choccie about 15 mins before an evening run does it for me. And lots of water during the day. – Treacle Tart Dried fruit

Black toenails are caused by pressure on the nail, which causes bleeding under it. The normal cure is to make sure that your shoes have lots of room for expansion when you run. I believe that in your feet can expand by up to 10 per cent during a marathon, caused