when i lift i always seem to all the sudden feel sick w/ a dry mouth and an upset stomach. i know im getting dehydrated but i drink alot of water before i go and also inbetween reps i drink a little. could eating dinner about a 1/2 hour before lifting have something to do w/ it? i also dont seem to sweat that much, but my face turns cherry red? is this from not having enough fluids in me?