![Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day](https://images.theconversation.com/files/471709/original/file-20220629-26-g88r2h.jpg?ixlib=rb-1.1.0&rect=0%2C0%2C2121%2C1412&q=20&auto=format&w=320&fit=clip&dpr=2&usm=12&cs=strip)
Your body has an internal clock that dictates when you eat, sleep and might have a heart attack – all based on time of day
![Premium Photo | Circadian rhythm concept alarm clock divided into two parts with day and night sleep and activity mode biorhythms3d render Premium Photo | Circadian rhythm concept alarm clock divided into two parts with day and night sleep and activity mode biorhythms3d render](https://img.freepik.com/premium-photo/circadian-rhythm-concept-alarm-clock-divided-into-two-parts-with-day-night-sleep-activity-mode-biorhythms3d-render_209484-6047.jpg)
Premium Photo | Circadian rhythm concept alarm clock divided into two parts with day and night sleep and activity mode biorhythms3d render
![Amazon.com: La Crosse Technology Soluna C79141 Mood Light Alarm Clock with Temperature & Humidity, Black, 6.81" L x 2.69" W x 6.71" H : Home & Kitchen Amazon.com: La Crosse Technology Soluna C79141 Mood Light Alarm Clock with Temperature & Humidity, Black, 6.81" L x 2.69" W x 6.71" H : Home & Kitchen](https://m.media-amazon.com/images/I/71Cyws97+AL._AC_UF350,350_QL80_.jpg)
Amazon.com: La Crosse Technology Soluna C79141 Mood Light Alarm Clock with Temperature & Humidity, Black, 6.81" L x 2.69" W x 6.71" H : Home & Kitchen
![Circadian Rhythm Vector Alarm Clock 3d Poster Stock Illustration - Download Image Now - Biological Clock, Rhythm, Sleeping - iStock Circadian Rhythm Vector Alarm Clock 3d Poster Stock Illustration - Download Image Now - Biological Clock, Rhythm, Sleeping - iStock](https://media.istockphoto.com/id/1419219037/vector/circadian-rhythm-vector-alarm-clock-3d-poster.jpg?s=1024x1024&w=is&k=20&c=qavRAfc4wK2TrvpGItl-aOmZGoK3vrHlCAYoxKOETRQ=)
Circadian Rhythm Vector Alarm Clock 3d Poster Stock Illustration - Download Image Now - Biological Clock, Rhythm, Sleeping - iStock
![Sleep and circadian rhythm disruption addressed with new Oxford spinout Circadian | University of Oxford Sleep and circadian rhythm disruption addressed with new Oxford spinout Circadian | University of Oxford](https://www.ox.ac.uk/sites/files/oxford/styles/ow_medium_feature/s3/field/field_image_main/alarm%20clock.jpg?itok=wqLmFKic)
Sleep and circadian rhythm disruption addressed with new Oxford spinout Circadian | University of Oxford
![12 Best Sunrise Alarm Clocks & Wake-Up Lights in 2022: Philips SmartSleep, Jall, Lumie, Hatch | SELF 12 Best Sunrise Alarm Clocks & Wake-Up Lights in 2022: Philips SmartSleep, Jall, Lumie, Hatch | SELF](https://media.self.com/photos/620aa24e2f75dbf3ccb352af/1:1/w_4023,h_4024,c_limit/GettyImages-1271328010.jpg)
12 Best Sunrise Alarm Clocks & Wake-Up Lights in 2022: Philips SmartSleep, Jall, Lumie, Hatch | SELF
![A Woman Sleeps in Bed, There is an Alarm Clock Nearby. Healthy Sleep, Sleep Rest, Circadian Rhythm Concept Stock Photo - Image of woman, rhythm: 271309366 A Woman Sleeps in Bed, There is an Alarm Clock Nearby. Healthy Sleep, Sleep Rest, Circadian Rhythm Concept Stock Photo - Image of woman, rhythm: 271309366](https://thumbs.dreamstime.com/z/woman-sleeps-bed-there-alarm-clock-nearby-healthy-sleep-rest-circadian-rhythm-concept-forty-years-age-dark-blue-271309366.jpg)