Your bedroom temperature could be quietly shaping how your heart functions while you sleep.

When we recommend mattresses to hot sleepers, we focus on how well they regulate temperature. But what exactly is temperature regulation in a mattress, and how can it help you sleep better?

Less efficient regulation of body temperature and hydration status are thought to contribute to the increased risk of mild (e.g. heat exhaustion) and severe (e.g., heat stroke) heat-related injuries ...