Your friend tells you that there is a negative correlation between how much caffeine someone drinks and hours of sleep. But you never drink caffeine drinks and you sleep only five or six hours per night, so you conclude:.

it's true caffeine has effect on sleep hours.

Explanation: Caffeine affects sleep time only depending on the time you take it example: taking it in very early in the afternoon or evening. Research has shown that if one takes caffeine 6 hours before going to bed, it will reduce sleep by 1 hour. If an already tired individual maybe tired from the day's work take caffeine, it affects them also by depriving them of sleep.i sleeping 5 to 6 Hours daily is not really caused by caffeine but can be cause also by fatigue, intensity of artificial light, anxiety, depression or other factors.

i feel as if they would both catch on before to long because they would see them to frequent

the use of electrical signals that transit messages is know as