Sleeping in a hammock can be a refreshing way to stay cool and promote restful sleep, as the suspended position promotes airflow around your body and prevents heat from getting trapped. "Hammocks are amazing. Anything that can allow air to pass beneath you is better than something solid or insulated. Flat surfaces are better than cushioned surfaces," writes one user.
On the flip side, since hot air travels up, sleeping on lower ground can be another way to stay cool, Redditors say. "The floor is probably the coolest place in the house," writes one user, while another adds, "Can confirm this. My house has what’s basically a short bottom floor but it’s always a bunch cooler down there. Perfect on hot days."