I do weight training and work out 3 times a week for 3 to 4 hours, after which I go to the mixed sauna. My underpants, which I change every day, are very sweaty in the crotch due to their oversized contents, including body fluids such as drops of pleasure and other things. If I'm really wet, there could be even more in there. Immediately after wearing them, I pack them in zip bags ready for dispatch. When I look at them myself after wearing them, I often even get a little excited.