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 ...

Lack of time is often the main reason people don't exercise regularly. But a type of interval workout recently popularized by ...

Like it of loathe it, high-intensity interval training (HIIT) is a key component of any decent training week. But how many of these sessions do runners need to do each week to get a meaningful aerobic ...

For a low-impact cardio sweat sesh, try this HIIT workout without jumping. (It's also great if you have downstairs neighbors.) Squat to kick: “A good exercise to include in every workout is going to ...

Welcome to Class Fitsugar's newest season! We're back in the studio, and our new trainer Natalie White will be leading you through a 30-minute cardio HIIT workout, joined by Paulyn Baens and Maya ...

Dancer and choreographer Kaleila Jordan will have you sweating in this quick and festive 10-minute dance session, combining holiday-themed hip-hop moves with high-intensity interval training.

I often hear from people who tell me how hard they are working to get lean and toned, but they just aren't seeing results. Here's the harsh truth: the word "toned" essentially means "muscle," and you ...

It combines strength and cardio into one total body sweat session.

Strength Or Cardio First? The Definitive Answer, According to an Exercise Physiologist originally appeared on Men's Fitness. Ever wondered if you're messing up your gains by doing cardio and weights ...

If you want to build a healthy, strong, and functional body, your best bet is to create a well-rounded workout routine. As you can likely guess, that means regularly performing both cardio and weight ...