If you've ever twirled a lock of hair around your finger and longed for its spirally shape to hold for more than a few seconds, you are the reason that flexi rods were invented. Flexi rods are easy to ...
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. April 5, 2018 Add as a ...