 When it's this hot, sleeping at night, even though the temperatures cool down, can be difficult. They're not cooling enough for many. WTOP's Gigi Barnett has some ways to beat the heat while you sleep. Want to sleep without the AC blasting this summer? Here's how to get some shut-eye in the heat. First, check what's on or near your skin and swap it for cotton. So that can include your pajamas, your undergarments, your bed sheets. The fabric helps you keep your body cool.