A recent study revealed the sugar industry's efforts 50 years ago to shape medical opinion on how sugar affects health. But today, scores of companies continue to fund food and nutrition studies.

Carbs are pinned to be the villains in many diets, but those poor guys are just misunderstood.

People like to say all kinds of things about protein – like, you need to eat lots of it to build muscle and lose weight. The truth is, the science of protein and how your body uses it is much more complicated than that.

To move all significant health markers in the right direction, do more work faster, trainers say. The only way to know intensity is to experience it. It is not a mythical creature born of grunting loudest, sweating most or cheering excitedly. It is also not a matter of opinion. It’s physics. Scientifically speaking, intensity is defined as power: force multiplied by distance, then divided by time. Simply put: Intensity is doing more work faster. “You have to teach people how to do it,” said Chris Spealler, a member of CrossFit Inc.’s Seminar Staff and a seven-time CrossFit.

Green juice, fancy leggings, acupuncture, and cleanses are all part of the new luxury lifestyle. By Marisa Meltzer.

BioRing is the new health and fitness wearable worn on a user’s finger that tracks and monitors calories, including protein and carb metrics, exercise, sleep, stress, hydration and heart health.

Why working out is great for health, but not for weight loss, explained in five minutes.

Last year, when MNN blogger Michael d'Estries found himself on the losing end of a Fitbit challenge he was competing in with friends, he walked around his neighborhood until the late hours of the night in 10-degree windchill to gain extra steps. Little did he know that all he needed was an electric saw and he could have won that challenge without taking a single step in the cold. Until recently, I had no idea fitness tracker cheating was even possible. But in a world where fitness tracking and health data sharing has become the norm, I suppose I shouldn't be surprised. We've become so competitive about our exercise that even when...

To natty or not to natty. The effects of caffeine & nicotine combined come close the the illegal “shred”-drug Clenbuterol Roidheads often make use of the illegal substance Clenbuterol to prep for a contest and bring their body-fat levels down to 5%. In essence its cough syrup for horses and furthermore, the substance is toxic …

These days, cream-of-the-crop exercises are deemed superior for their soundtrack, the lighting, the atmosphere. When we can get alerts to our phone-computers from our watch-computers and virtual reality is on the verge of becoming commonplace, though, it's almost caveman-esque that fitness hasn't evolved that much over time. In an ideal world, your workout should do so much more for you than bump the latest Drake song — self-massage machines should relieve your tension using infrared lighting...

Today, it seems like everybody's a runner. But it wasn't always that way. Vox's Phil Edwards looked into running's history.

Discover the latest reviews, tips and advice on all bodybuilding and sports supplements.

If you're constantly stressed about fitting a workout into your daily schedule, we have good news. A study published by McMaster University in Hamilton, Ontario, Canada, just released a report corroborating what exercise scientists have long

If you've ever said you just don't have time to work out, it's time to find a new excuse. A new study from McMaster University says just one minute will do.

Researchers at the Human Performance Institute in Orlando, FL, found that a high-intensity circuit training (HICT) routine is the most effective way to workout. This program uses a series of 12 exercises done over the course of approximately 7 minutes.

Charles Eugster, 96, is a runner, body-builder, public speaker, writer, rower, and wakeboarder. He also claims to be so healthy that his formerly grey pubes have turned brown again.

Ultramarathoners can train for years and still get sidelined by blisters. Stanford researchers tested paper surgical tape during a 155-mile race and found it reduces blisters by 40 percent.