Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. Jennifer Steinhoff, MD, is a ...

Anaerobic exercise uses glucose for energy, instead of oxygen. Aerobic (cardio) and anaerobic exercises both improve health, but only anaerobic exercises build muscle mass and strength. Anaerobic ...

Trainers often joke about the difference between “show” muscles and “go” muscles—in other words, muscles that look pretty versus muscles that can actually pull their weight when it counts. Whenever ...

Beloved by gym bros and reality show contestants alike, upper body strength exercises have multiple benefits for gym performance and daily life. And contrary to popular belief, you don't need to spend ...

Experts detail the benefits of swimming, from strengthening your muscles to reducing inflammation and boosting your mental health—and how to get started. Swimming offers a low-impact exercise with ...

A nine-year-old boy from northwestern China who bravely confronted bullies during a class meeting has received praise online and apologies from his tormentors. According to the mainland media outlet, ...

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 ...