Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

Arm fat can be particularly frustrating. It’s often one of the last areas to respond to diet and exercise, and the first place to show when we gain weight. Whether you’re concerned about upper arm ...

Stop relying on bulky gym machines that isolate your muscles; standing functional patterns are the secret to rebuilding a ...

Ever spent months grinding away at crunches for abs that never seem to appear? Or done endless bicep curls without getting the toned arms you’re after? You might be focusing on all the wrong muscles.

Flabby arms aren't a lost cause after 50, you just need the right approach. Tightening arm jiggle comes down to consistent training that tones your triceps, shoulders, and upper back without adding ...