"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." High-intensity interval training (otherwise known as HIIT) may sound, well, intense. And it can be. But ...

New research suggests that HIIT workouts may offer older adults more benefits than moderate exercise, such as preserving muscle mass and reducing body fat percentage, though more research is needed to ...

However, cardiologists are begging women over 50 to make time for it. "After age 50, especially around and after menopause, women face rising risks of high blood pressure, cholesterol changes, weight ...

When it comes to zone 2 vs HIIT training, it feels like there’s a new study published every other week about which method trumps the other for fitness. So, we consulted the experts for their final ...

As women enter their 40s and beyond, hormonal changes can make it harder to build muscle, maintain energy, and manage body composition. High-intensity training is one of the most powerful tools for ...

Julia Sullivan is a health and fitness writer, editor and content strategist well as a certified personal trainer. Her byline is in many publications from Harper's Bazaar to SELF Magazine to brand ...