by Andy Blow
The half marathon is one of the trickier distances to get right from a hydration perspective - Precision Hydration's Andy Blow shows you how...
Andy Blow has a few top 10 Ironman and 70.3 finishes and an Xterra World Age Group title to his name.
He founded Precision Hydration to help athletes solve their hydration issues and you can take their free online Sweat Test to get started with your hydration strategy today.
He has a degree in Sport and Exercise Science and was once the Team Sports Scientist for Benetton and Renault F1 teams.
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