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 ...

For years, many runners have used heart rate-based training to maximise their running potential. This method includes working at five ‘zones’, where your heart is beating at a percentage of its ...

Like an international spy, aerobic capacity goes under various aliases. You may have also heard it referred to as aerobic fitness or cardiovascular endurance. It’s all the same thing: the body’s ...

Kenyan marathoner John Korir regularly attends step aerobics classes to boost his form and fitness – so here’s how to get the ...