Sometimes in life, you really can't beat the old stuff. Old friends, old tunes, old movies - we love them all. And when it comes to working out, it seems we're partial to going retro too: indoor step ...

If you can't walk up a flight of stairs without getting winded, and just thinking about running a mile is enough to leave you feeling exhausted, it might be time to start (or get back into) a fitness ...

Many people new to fitness or experiencing prolonged absences wonder how often they should work out as beginners and what exercises to do. The reps and sets for each exercise, rest periods in between ...

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. While plenty of ...