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. Cardio load gets a ...

Can you guess what the most commonly cited obstacle to exercise is? I bet you can. Many people, including many of my personal training and coaching clients struggle to make time for exercise. In this ...

‘Biological age’ has become the health buzzword of the decade, and people are spending small (and large) fortunes on fancy new scans, testing and supplements all in pursuit of a younger biological age ...

Cardio is more than just running laps or hopping on a bike. It's any movement that gets your heart pumping, your body sweating and your energy levels soaring. Whether you're chasing a weight loss goal ...