@Ana1234 - Honestly it can be a bit of a pain as well, because your body becomes better at maintaining homeostasis in other ways and they aren't all pleasant.
If I even go into a gym I basically start sweating now and it used to take a while before I would break a sweat. A trainer explained that it is my body learning that any exercise means a long workout and it's better to get started on the cool-down.
It's quite gross if all you want to do is go for a short run in the morning and you're sweating like you've just run an ultra-marathon through the desert.
But I guess it's nice to have another sign that I'm getting fitter.