If you love P90X and you're saying, "Give me more," or, "I need a challenge"-then here it is, the P90X Plus Series. Beachbody trainer Tony Horton amps up the Muscle Confusion with brand-new moves and ...

Nick Blackmer is a librarian, fact-checker, and researcher with more than 20 years of experience in consumer-facing health and wellness content. Doing cardio daily can boost endurance, heart health, ...

Sherri Gordon, CLC is a certified professional life coach, author, and journalist covering health and wellness, social issues, parenting, and mental health. She also has a certificate of completion ...

Mercey Livingston is a health and wellness writer and certified Integrative Nutrition Health Coach. She's written about fitness and wellness for Well+Good, Women's Health, Business Insider, and ...

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 ...

If you love P90X and you're saying, "Give me more," or, "I need a challenge"-then here it is, the P90X Plus Series. Beachbody trainer Tony Horton amps up the Muscle Confusion with brand-new moves and ...

The hardest part of working out consistently? Getting started. Once you do, though, you start feeling (and soon, seeing!) the positive impact on your mind and body. But with so many workout options ...

Which exercise machine burns the most calories? The one you enjoy and will use the most. Here are our all-time favorite cardio machines we have tested at Live Science. When you purchase through links ...

There are 206 muscles in the human body, and each one is important. Most bodybuilders like to focus on the ones they can see, training them several times a week to make them bigger – a process called ...

Walking is easy for most people and limits stress on joints. Swimming gives muscles a workout and helps with joint pain. Cycling can help reduce joint pain and improve balance. If you have joint pain, ...