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. The word “toning” is ...

In the last few decades, individuals with mobility issues have seen a flurry of advancements in neuroprosthetic devices, artificial systems that seek to replace a particular sensation or lost ability.

Researchers developed a way to help people with amputation or paralysis regain limb control. Their optogenetic technique could offer more precise control over muscle contraction, along with a dramatic ...