I don't know about this stuff. Nancy Clark does recommend in her Sports Nutrition Guide Book that you have extra sodium before a long ride (or run, etc.) on a hot day. But her recommendations are for when you will be exercising for more than 4 hours in the heat.
I would not rely on water alone - for me a 40-mile ride usually takes 2.5-3 hours, so I would plan on having at least one bottle of gatorade, maybe two, in addition to several packets of gu, over the course of the ride.





 
					
					 PreLoading Electrolytes
 PreLoading Electrolytes
		 Have any of you ever had any ill effects from pre-loading electrolytes on a ride?
Have any of you ever had any ill effects from pre-loading electrolytes on a ride? 
				
				
				
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  Reply With Quote Originally Posted by ny biker
 Originally Posted by ny biker
					
