text: how can i sweat more when i work out? apparently sometimes your face gets really red when you work out because you don't sweat enough and it's humid.  both are the case for me.  it has something to do with blood vessels expanding and pushing toward the skin.  should i drink more water or what? when you sweat, it means your body is working hard, causing your face to turn red. its so embarrassing isn't it! i had the same problem, until i drank gatorade. i don't know why, but it helps.