So last night, prior to 12 mi run, I weigh myself. Then after run I weigh again, and find that I lost 9.5 lbs. This was in 92*F, about 49% Humidity, and took 1:26 at 7:12 pace.
Is this much loss normal? Is it fair to assume that this was all sweat loss. How should I turn this into data to help with nutrition planning for longer events like 1/2IM?
Is this much loss normal? Is it fair to assume that this was all sweat loss. How should I turn this into data to help with nutrition planning for longer events like 1/2IM?