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2. Sleep Calculator: How Much Sleep Do You Need? - Healthline

   www.healthline.com/health/sleep/sleep-calculator

   Sleep guidelines by age. Birth to 3 months: 14 to 17 hours. 4 to 11 months: 12 to 16 hours. 1 to 2 years: 11 to 14 hours. 3 to 5 years: 10 to 13 hours. 6 to 12 years: 9 to 12 hours. 13 to 18 years ...

3. How to Figure Out How Much Sleep Is Right for You - Healthline

   www.healthline.com/health/sleep/how-to-figure...

   your wakeup time. whether you were able to complete five to six sleep cycles, or whether they were interrupted (each take about 90 minutes) the time you fall asleep, and how long that takes from ...

4. Calories Burned Walking: 1 Mile, 1 Hour, Calculator - Healthline

   www.healthline.com/health/calories-burned-walking

   Calculator. Most calculators you find online take more into account than just your weight and walking pace. ... The equation is: calories burned = BMR x METs/24 x hour. For example: A 35-year-old ...

5. Sunrise equation - Wikipedia

   en.wikipedia.org/wiki/Sunrise_equation

   Sunrise equation. A contour plot of the hours of daylight as a function of latitude and day of the year, using the most accurate models described in this article. It can be seen that the area of constant day and constant night reach up to the polar circles (here labeled "Anta. c." and "Arct. c."), which is a consequence of the earth's inclination.

6. Hours of service - Wikipedia

   en.wikipedia.org/wiki/Hours_of_service

   Hours of service ( HOS) regulations are issued by the Federal Motor Carrier Safety Administration (FMCSA) and govern the working hours of anyone operating a commercial motor vehicle (CMV) in the United States. These regulations apply to truck drivers, commercial and intercity bus drivers, and school bus drivers who operate CMVs.

7. How Much Sleep Do I Need? - WebMD

   www.webmd.com/sleep-disorders/sleep-requirements

   School-age children (ages 6-13) need 9-11 hours a day. Teenagers (ages 14-17) need about 8-10 hours each day. Most adults need 7 to 9 hours, although some people may need as few as 6 hours or as ...