Functional fitness was never something I was interested in when I was younger. Instead, my 20s were all about vanity workouts. Anything that could get me to sculpted abs? Sign me up. It wasn’t until I ...

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. If you’ve been ...

Proprioceptive neuromuscular facilitation (PNF) is a form of assisted stretching. It combines passive stretching with muscle contraction. First, your partner applies force to stretch your muscle ...

Many people see stretching as an essential part of any exercise or workout regime. It helps us increase our flexibility and our range of movement. Many of us also stretch to loosen up before ...