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. We may pay more ...

If you’ve ever finished a ride and wondered why your neck and shoulders are hurting more than your legs, you’re not alone--it’s an all too common complaint among triathletes. Understanding why can ...

Whether it's working at a computer desk or scrolling on the phone, we spend a lot of time looking down — usually slouching at the same time. As we slouch, our shoulders round and our head moves ...

Building a strong core often starts with simple ab exercises, like crunches. These can be done anywhere, with no equipment, by people of all fitness levels! But even though crunches are ...