Ready to transform your body and feel more energized than ever? If your goal is to burn calories efficiently and optimize ...

Burn more, weigh less. Sounds simple, right? Not exactly. A new study is challenging conventional wisdom about exercise and ...

Your body may offset exercise by trimming energy use in other areas, limiting how many extra calories you burn.

Though bodybuilders and runners usually take different approaches towards physical fitness, each gets something positive out of their efforts. "The most important exercise for each person is the ...

Think carefully before running or cycling in the heat of the day If you’re tired of spending hours on the treadmill with minimal results, it’s time to discover the exercises that deliver maximum ...

From sprints to incline walking, the data shows which workouts burned the most fat – and why jogging isn’t automatically top ...

In the digital age, we’re obsessed with the idea of efficiency and terrified of being inefficient, and we often take that mindset outside the workplace. Case in point? Spend a little time on ...

Back in 2012, an evolutionary anthropologist named Herman Pontzer published some baffling data from his time among the Hadza, a group of hunter-gatherers in Tanzania. Using a sophisticated technique ...

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. One of the benefits of ...

Experts break down why working out isn’t the best way to burn calories.