High-intensity interval training, or HIIT, is a great way to get in a fast, effective workout. This quick routine is helpful ...

Our reporters have teamed up with fitness experts to design dozens of routines. Try something new — and build an exercise ...

The ideal breakdown of strength training, cardio, and sweet, sweet rest.

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

ARE YOU READY for the strongest season of your life? If you're prepared to prioritize movement, push your physical limits, and challenge the concept of what you can accomplish, the new Summer Shred ...

The alarm clock blares, and you reach for your running shoes without thinking about it. Next thing you know, you’re jogging through your neighborhood on the same route as every other morning. You are ...

Apple has introduced a fresh lineup of Apple Fitness+ content to help users achieve their fitness goals in 2026. The post Apple Fitness+ adds new workout programs to help you stick to your 2026 ...

So you’ve been lifting, running, or training for a while, and you’ve asked yourself: Do I need to change my routine every few weeks? Some people swear by “muscle confusion,” while others say ...