In Treadmill: Fitness in Young Adulthood Protects Heart Health in Middle Age

One-third of all U.S. teens and 15 percent of young adults show signs that they could develop heart disease. Northwestern University associate professor Mercedes Carnethon was lead author of the study. She says the numbers underestimate the levels of low fitness in the U.S. population. That's because the highest-risk people were excluded because it was actually too risky in this population study t ...Treadmill