Mark Zuckerberg, Elon Musk, and I have at least one thing in common—a high-tech mattress pad. Excuse me, a “sleep fitness” product called the Eight Sleep. It’s really a biohacker’s version of the waterbed, with a pump attached to a cover full of capillaries that heats and cools the body—mine, plus Zuckerberg’s and Musk’s—throughout the night.
The premise: lowering your core temperature improves your sleep quality and duration. For those who’d rather not snooze outdoors or crank the air conditioning to 65 degrees, cooling the mattress is a clever solution.
