00:00Every night, millions of people are silently damaging their hearts, and most don't even realize they're doing it.
00:06Doctors now warn that sleeping less than six hours a night can sharply increase the risk of heart attack and
00:12heart failure.
00:13During deep sleep, your heart finally gets time to recover.
00:17Blood pressure drops.
00:19Heart rate slows.
00:20Your cardiovascular system repairs itself, but when sleep is cut short, that repair process never fully happens.
00:27Research shows chronic short sleepers have dangerously higher nighttime blood pressure.
00:32And there's another hidden danger.
00:34Sleeping at different times every night can stress the heart, too, even if you sleep enough hours overall.
00:40For adults over 40, the risk becomes even greater.
00:44As we age, the heart's natural recovery system becomes less effective.
00:49Cardiologists say seven to nine hours of consistent sleep is one of the most powerful things you can do for
00:55your heart.
00:55Your bedtime could be protecting your life or slowly damaging it.
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