Whether your goal is to pack on muscle, clock a new PR, or live past 100, here’s what the experts want you to know.

In this episode, they describe the process of ventilation and gas exchange and the bodily adaptations that support these processes.

Aerobic respiration began hundreds of millions of years earlier than previously thought, a new study suggests. Oxygen is a vital and constant presence on Earth today. But that hasn’t always been the ...

As a runner, it’s helpful to know your lactate thresholds. And, yes, you read that right: thresholds, plural. There is more than one lactate threshold that matters in terms of pacing yourself and ...

Oxygen is a vital and constant presence on Earth today. But that hasn't always been the case. It wasn't until around 2.3 billion years ago that oxygen became a permanent fixture in the atmosphere, ...

When you’re crunched for time and need to squeeze in a workout, it’s fair to want to get the most out of your effort. But while there’s been an ongoing debate about the merits of aerobic vs. anaerobic ...

If you’re experiencing joint pain in the knees, the solution might be to walk it off. Aerobic exercise can reduce pain, improve movement and enhance quality of life for patients with knee ...

The original version of this story appeared in Quanta Magazine. Take a deep breath. A flow of air has rushed into your lungs, where the oxygen moves into your bloodstream, fueling metabolic fires in ...

Strength training after the age of 50 gets a lot of love these days—for good reason. But aerobic (or cardio) exercise—continuous physical activity that increases your heart rate and breathing rate so ...

In a hot spring at Yellowstone National Park, a microbe does something that life shouldn’t be able to do: It breathes oxygen and sulfur at the same time. Take a deep breath. A flow of air has rushed ...

Aerobic exercise is cardiovascular conditioning that strengthens both your heart and lungs. The word “aerobic” means “with oxygen,” as this kind of exercise is fueled by the oxygen that you get from ...