This article may contain affiliate links that Yahoo and/or the publisher may receive a commission from if you buy a product or service through those links. By the afternoon, my creative brain is ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...

Is your workout too easy? Challenge yourself to get more fit and age better. The more you exercise, the easier it gets. That’s why, at some point, you may need to power up your workouts. It’s ...