If you sweat for money... Well, that's just plain stupid. You may get payed $10 to move the lawn, which might take half an hour, thats an hourly pay of $20 or 200 peds. When sweating, you maybe be able to get 1k bottles of sweat an hour, which at current marked price equal 5 peds an hour. That's 40 times less! In other words, it's not worth it.
So, you think you get good skills while sweating? You don't, you get free skills, asuming you don't waer any armor, and that's basicly it.
I hate sweating and think it's a waste of time, but I am glad that not everyone is like me, otherwise I'd have to pay a MU of a quadrillion% for ME, which I use quite a lot of.