Sleep Optimization Articles
6 articles
- Sleep
How Much Caffeine Is Too Much in a Day?
Learn what 400 mg of caffeine per day really means, how to total coffee and energy drinks, and when a lower limit may be wiser. - Sleep
How Much Sleep Debt Do You Have? Recovery Guide
Calculate your weekly sleep deficit, understand why recovery is not hour-for-hour, and learn practical ways to improve sleep without relying on weekend catch-up. -
What Is Your Ideal Weight for Your Height?
Find a healthy BMI-based weight range and compare it with the Devine estimate. Learn why a single scale number cannot define your health. -
What Is a Healthy Waist-to-Height Ratio?
A healthy waist-to-height ratio is 0.5 or lower. This metric predicts cardiometabolic risk from central obesity better than BMI alone. - Sleep
Sleep Chronotypes: Are You a Lion, Bear, Wolf, or Dolphin?
Lion, Bear, Wolf, or Dolphin? Your chronotype is your body’s natural timing — and matching your day to it makes sleep and focus easier. - Sleep
The Best Time to Stop Drinking Coffee for Better Sleep
Caffeine lingers for hours. Research shows even an afternoon coffee can steal sleep. Here is how to set a sensible caffeine curfew.