A man awake in bed in a darkened room, holding his wrist on his forehead; in the foreground a clock on the night stand reads 2:38.Circulation: Cardiovascular Quality and Outcomes

“The dimensions of sleep health are just different aspects of sleep, such as quality, timing, and regularity. Each dimension can be affected in different ways and to varying degrees by sleep habits or sleep disorders,” says Dr. Sogol Javaheri, a sleep specialist at Harvard-affiliated Brigham and Women’s Hospital. Sleep issues aren’t ordinarily considered problems unless they impair your ability to function and your quality of life. However, emerging evidence suggests they may affect your cardiometabolic health, although more research is needed, she adds.