People who drink coffee every day find it difficult to believe that having coffee in the afternoon or at dinner creates a sleep problem. Many others believe that an evening coffee consumption affects the quality of sleep. But how true is that?

Experts say this is not true at all. According to a study done at the University of Florida, a large group of people were monitored for a full 6 months. These people were checked on how much caffeine, alcohol and nicotine they had consumed. Subsequently, the results of sleep diaries were compared, where participants' sleep duration, sleep quality and how fast they woke up were recorded.

The results of the study showed that alcohol and nicotine manage to disrupt sleep, while caffeine has no effect whatsoever.

This study presents one of the largest examinations of the associations of evening alcohol use, caffeine, and nicotine and objectively measured outcomes. Health Newspaper