I'm running a marathon in March (my 5th overall) and the last marathon I suffered with severe cramp after 23 miles. I've been advised to take 'salt tablets' by another runner. I've done some research ...
I was doing regular jog for about 6-7 KM for two weeks. One day decided to do interval training and started running fast. After about 400m my left lower leg started to hurt. I continued slow run for ...