Extreme obesity

I can sweat quite a bit during sex. Especially noticeable if I was on my back on the mattress for long, as the sheet will show that the whole area under my back is wet. Depends some on the weather, and how sliw the build up is. I think I really heat up near peak arousal, so if I end up in that state for long the total amount if sweat is higher.

Of course the fatter you are and the less fit you are, the harder it typically is to keep cool when active. I'm not all that fat by standards here, and am somewhat active. Take away that activity and add a hundred pounds and I'm sure I'd sweat a lot more.

Fat keeps your body warmer than average. Even in winters, fat people feel a lower cold. I too have experienced the same issue.

You need a box fan, a dark colored towel, and water based lube.