New medical findings suggest that people who stay up late regularly could face a significantly higher risk of serious cardiovascular problems.

WASHINGTON (AP) — Being a night owl can be bad for your heart. That may sound surprising but a large study found people who are more active late at night — when most of the population is winding down ...

The study, published in the Journal of the American Heart Association on Wednesday, found that middle-aged and older adults who were more active in the evenings had poorer cardiovascular health, ...