If you're anything like me, this measly one-hour time change has made all the difference in your sleep habits. It's only one hour, why does it have such an affect? The answer is in circadian rhythms.

According to WebMD; If you're in your 40s, you should be sleeping between seven and nine hours every night, but the chances are fairly good that you don't. How much sleep we need so we function at the top of our game varies by age. The National Sleep Foundation conferred with 6 sleep experts, and 12 experts from different medical associations to update its guidelines on how much sleep we need based on our age. This is how much sleep we need by age:

  • Newborn (0-3 months): 14-17 hours (previously: 12-18 hours)
  • Infant (4-11 months): 12-15 hours (previously: 14-15 hours)
  • Toddler (1-2 years): 11-14 hours (previously: 12-14 hours)
  • Preschool (3-5 years): 10-13 hours (previously: 11-13 hours)
  • School age (6-13 years): 9-11 hours (previously: 10-11 hours)
  • Teen (14-17 years): 8-10 hours (previously: 8.5-9.5 hours)
  • Young adult (18-25 years): 7-9 hours (new category)
  • Adult (26-64 years): 7-9 hours (no change)
  • Older adult (65+ years): 7-8 hours (new category)

How much sleep do you normally get? I usually tend to get between 6-7 hours per night, sometimes if I'm lucky, I might creep up on a whole 8 hours... but that's not very common.

(via WebMD)