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IDEA's popular articles in 2021
5 Most Popular Articles in 2021

What piqued reader interest this past year? Here we recap our top 5 popular articles that received the most reads in 2021!

Graphic of heart rhythms to show atrial fibrillation
Atrial Fibrillation in Athletes

For athletes, the risk of experiencing irregular heart rhythms, known as atrial fibrillation, is 2.5 times higher than it is for nonathletes.

Person sleeping in bed
Exercise and Sleep

Physical activity can mitigate the risk from poor sleep. This insight on exercise and sleep is according to new research findings.

Families and fitness
10 Ways to Help Families Change

Families need you! A growing body of research makes it clear: Families provide a powerful force in supporting—or opposing—better health behaviors. Indeed, the authors of a state-of-the-art review in a…

Woman exercising for HIIT benefits
HIIT Benefits Health

High-intensity interval training is popular among all ages. Beyond its convenience and efficacy, research shows HIIT benefits health, too.

Two male friends jogging in a forest.
Why the Benefits of Exercise Vary

We know that everyone can experience the benefits of exercise, but it has remained unclear why different people may respond to the same exercise program in different ways. The mechanistic…