Does having a drink before bed help you fall asleep?
It may have the opposite effect.
In a new, Japanese study ten adults were assigned to drink varying amounts of alcohol an hour and a half before bed.
Their heart rate was measured while they slept.
They found the more alcohol a participant drank, the higher their heart rate during sleep.
This leads to symptoms of insomnia, a lack of "deep sleep" and difficulty staying asleep.
Experts say this could have a long-term negative effect on health if drinking before bed becomes a habit.
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