You don’t need a pricey gym membership or a set of weights to start building upper-body strength—just your own body. Whether you're tight on time, space, or equipment, bodyweight arm exercises offer a ...

Add Yahoo as a preferred source to see more of our stories on Google. Woman holding a set of dumbbells left arm extended at shoulder height and right arm by head during dumbbell arm workout in studio.

I like a challenge when I work out and over the years I've enjoyed trying different types of exercise. It doesn’t matter how long the routine is (ideally under an hour), as long as someone tells me ...

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. We’re going to start ...