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About
How Sleep Works
How Sleep Works
Sleep Health
Physical Health
Mental Health
Chronotypes
Napping
Nutrition
Dreams
Sleep Aids
Melatonin
Travel and Sleep
Sleep FAQs
Sleep Calculator
Common Sleep Issues
Insomnia
Sleep Apnea
Snoring
Sleep Deprivation
Sleep Disorders
Sleep by Age
Pregnancy
Baby Sleep
Children and Sleep
Teens and Sleep
Seniors
Sleep Products
Best Mattresses
Best Mattresses
Best Mattress for Side Sleepers
Best Mattress for Stomach Sleepers
Best Mattress for Back Sleepers
Best Mattress for Back Pain
Best Mattress for Heavy People
Best Hybrid Mattress
Best Firm Mattress
Best Cooling Mattress for Hot Sleepers
Best Memory Foam Mattress
Best Cheap Mattress
Mattress Reviews
Sleep Accessories
Best Mattress Toppers
Adjustable Beds
CPAP Machines
Sleep Doctor PM
About
Does even a small amount of caffeine make you jittery?
*
Yes
No
Do you have a problem falling asleep?
*
Yes
No
If you have had coffee in the day, when you wake the next morning do you feel like you had restful sleep, when you have slept 7 hours or more?
*
Yes
No
Do you feel like you need caffeine to start your day?
*
Yes
No
Do you get headaches or feel lethargic if you don't have your normal caffeine intake?
*
Yes
No
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