[svrtknst]

Not sure about "fix" but cooling the body via hot showers is a fairly common recommendation for anxiety relief, especially prior to sleep.

Supposedly, if you cool the body down externally (cold shower, cold environment) it will try to increase body temp, but if you take a hot shower or sauna, the body will instead try to lower its temperature.

[lazyasciiart]

Drinking hot tea will also help you stay cool externally, as people in some areas seem to have known for a long time https://www.smithsonianmag.com/science-nature/a-hot-drink-on...

[devilbunny]

Note: applies in hot, dry climates where you’re wearing light clothing that lets the sweat evaporate. Don’t try it in New Orleans or Singapore.