I sweat a lot. I'm in my early 20s, I have a clean health record, work out often. It is something that I've had all my life. Can I stop it?

Hyperhydrosis. It not all that uncommon. Keep yourself well hydrated and wear cool breathable clothing. You can try a stronger anti persperant like certain dry over the counter. If its a real problem there is some benefit to Botox injections in the really sweaty spots like armpits.