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 ...
If running at 50-60 deg F is ideal for a marathon in low humidity (RH < 60%) then what is the ideal temp for high humidity (RH > 60%) ? Is it the same?