by Mario Fraioli
Crush your next marathon with this essential nutrition and hydration advice from two top coaches.
by Jeff Gaudette, Published Jul. 10, 2014, Updated Jan. 18, 2016 at 12:28 PM UTC
How they work, as well as why, when and how to use them.
by Duncan Larkin, Published Jul. 11, 2011, Updated Jul. 11, 2011 at 9:11 AM UTC
According to an article in The Globe and Mail, not necessarily.
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