Welcome to day two of Amazon Prime Day. Yesterday, we rounded up the best Prime Day Apple deals, and as we enter the next 24 hours of epic sale shopping, we're not showing any signs of slowing down—a...

Sales are like a sugar addiction for consumers.

Evaluating everything from mattresses and pillows to sheets and white noise machines, our journalists spend hundreds of hours testing gear (and, yes, napping) to help you get a good night’s sleep.