So if your significant other can crank out pushups without breaking a sweat, they might have a high body count. And there is such a thing as the ideal number of sexual partners for an individual.

The best bed sheets are comfortable and soft. We've tested a range from cotton percale to linen. Our favorites include L.L.Bean, Brooklinen, and Sijo.

Fitness wearables can help you move more, sleep better, and stay healthy. Here's how to pick the right one for you, along with the best fitness trackers we've tested.