Getting warmer, like in a sauna or by exercising, makes you feel less hungry because it lowers the hormones that make you want to eat.

Adipose Tissue‐Resident <i>Sphingomonas Paucimobilis</i> Suppresses Adaptive Thermogenesis by Reducing 15‐HETE Production and Inhibiting AMPK Pathway

Twenty four-hour passive heat and cold exposures did not modify energy intake and appetite but strongly modify food reward