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. To protect ourselves ...

Many hand sanitizers contain around 60-80% alcohol, which is why they are useful in preventing the spread of infectious diseases. Hand sanitizer use has been a key control measure in limiting the ...

You’re set up for a personal best, the weight is loaded, your mind is locked in, and then suddenly... your grip starts to slip. It’s frustrating because you know you can lift heavier, but your fingers ...