Gel-infused memory foam mattress pads are effective at dissipating heat and promoting air circulation around the sleep surface. If you still find that excessive heat is disrupting your sleep, you could check out the chiliPAD Sleep System, which feeds tubes of cooling or warming water throughout the mattress pad. Another great alternative is the BedJet. It's an electronically powered cooling, warming and sweat-drying system that blows air across your sleep surface.