Let's talk chalk. Resin, also known as rosin, colophony, and colophonia, amongst other names, is present in many liquid chalks commonly used for climbing, gymnastics and weight training. It's usually ...

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Climbers use chalk to keep their skin dry and increase friction at the point of contact with the rock. The practice was adopted from the gymnastics and weightlifting world where sweaty hands can lead ...

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 ever seen ...

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 ...

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. October 31, 2019 Add ...