Is 6 hours of sleep enough: For most adults

For most adults, seven to nine hours of sleep per night is considered optimal for heart health. But the number of hours alone isn’t enough—quality matters just as much as quantity. Deep and REM sleep stages play a vital role in restoring energy, repairing tissues, and regulating essential hormones. How much sleep do you really need? A sleep calculator can help you figure out when to go to bed, based on your wake-up time and age. Is 6 Hours of Sleep Enough? Unless you’re within the ultra-rare category of people who need less sleep, then no, 6 hours of sleep a day is not enough. 6 hours might be enough to make you feel ‘normal’, but based on countless scientific studies – 6 hours isn’t giving your mind and body enough time to keep you the healthiest and ... Whether you can get by on less than the National Sleep Foundation recommendations for your age group – and none of them drop as low as six hours – comes down to the body you’re born into. “For some individuals, obtaining six hours of sleep per night may be enough,” Gregory says.