Regular exercise supports immune health by improving the circulation of your immune cells and reducing inflammation, but ...

It feels good to push the body to the point of exhaustion. Leaving the gym or a fitness class soaked with sweat is a deeply satisfying manifestation of the endorphins humming around in your brain.

He and his colleagues have found that even five- to 10-minute bursts of an exercise with an intensity like running, and as ...

A trainer offers a tip for whether you should opt for cardio or strength training when you only have five minutes to spare.

When I think of walking for cardio, I picture Jane Fonda-vibes outfits (hello, brightly-colored, high-cut Spandex and sweatbands), wrist and ankle weights, and wildly pumping arms. And then I shrug it ...

Please provide your email address to receive an email when new articles are posted on . Men and women had lower deacylated ghrelin levels in high-intensity vs. moderate-intensity or no exercise ...

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. January 12, 2026 Add ...