When you buy through our links, Business Insider may earn an affiliate commission. Learn moreWe tested the best thermoregulating pajamas for hot sleepers. Here's which sets kept us comfortably cool and dry through the night.Lauren Dana Ellman, Gabrielle Chase, Talia Ergas/Business InsiderIf you wake up hot and sticky from perspiration, as if your body cranked up its internal temperature to sauna status, you're not alone.