Sometimes in life, you really can't beat the old stuff. Old friends, old tunes, old movies - we love them all. And when it comes to working out, it seems we're partial to going retro too: indoor step ...

Although many people aspire to exercise more in the new year, nearly 80 percent of adults fail to meet the recommendation for aerobic and muscle-strengthening activity. To achieve any fitness goal, it ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. While plenty of ...