Speaking of humid countries, here's a tip on how to deal with sweat if you travel to one:
Drink as much water as you can stand, all day long.
Accept the fact that you are wet as soon as you arrive and do not try in your mind to make it any different. In fact, will that liquid to ooze out profusely and love it.
Otherwise, don't even go there.
The more you drink, the more you will sweat. The more you sweat, the purer and non-sticky your sweat will be. You will not stink. Your clothes will not yellow.
If you limit your water intake with the thought of reducing the sweating, you will be successful. You will also be successful in causing aches and fatigue, yellowing your clothes, making your skin sticky and stinky.
