A majority of adults begin the day with caffeine. Drinking caffeine 4-6 hours before bed has been shown to impact the ability to fall asleep & sleep quality.
Research shows consuming caffeine before bedtime can suppress the production of melatonin, a hormone that assists in a good night’s sleep.
The FDA recommends keeping daily caffeine dosage under 400MG. Average caffeine content in:
Coffee is 65-350mg depending on type and amount (lowest being decaf and instant)
Tea is 30-250mg
Soda is 35-375mg