Simple cardio that boosts energy, strengthens your heart, and helps you live longer.


Latest Articles

How to Safely Push Harder in Cardio While Avoiding Burnout

Pushing harder in your cardio workout means building stamina for activities like running while aiming for goals such as loosing weight, but safety comes first to dodge burnout. The smart way starts with gradual changes that let your body adapt…

What Happens Inside Your Body During High-Intensity Cardio Workouts

When you dive into a high-intensity cardio workout, like sprinting on a track or pushing through intense running intervals, your body kicks into high gear right away. Your heart starts pounding faster and harder, pumping more blood with each beat…

Continuing Intense Cardio After a Break: What Your Body Remembers

Your body holds onto memories of past cardio workouts, even after a long break, making it easier to pick up intense running or other cardio again than starting from zero. Muscle cells and your nervous system retain adaptations like better…

How Your Heart, Lungs, and Muscles Adapt to Intense Cardio

Your heart, lungs, and muscles go through amazing changes when you push them with intense cardio. These adaptations make your body stronger, better at using oxygen, and more efficient during a cardio workout like running. Start with your heart. During…

Trusted health & fitness resources

Helpful sources for exercise, heart health, strength and stamina

Mayo Clinic
CDC Guidelines
ACSM
American Heart Association