Don’t be fooled into thinking that being asleep is just a state of unconsciousness.
Sophie Cockett and Bianca LondonConversely, when it starts to get dark at night, the hypothalamus picks up on the decreasing natural light and sends out a different set of instructions. It tells the body it feels sleepy, signalling for its core temperature to drop and the release of melatonin. Drowsiness begins and... can’t quite remember where we… so tired… good ni… zzzzz.
Those biological systems that regulate sleep end up all over the shop, which has a knock-on effect, health-wise, as the body is unable to fulfil its night-time duties effectively. Constantly waking up feeling exhausted is hard enough, but these disruptions can go deeper.
Instead, it releases more cortisol and adrenaline, its stress hormones, in an effort to stay awake by trying to increase alertness. This further compromises insulin levels, leaving a whole load of glucose hanging around in the bloodstream, causing chaos with blood sugar balance, energy levels and, inevitably, appetite.
This is known as ‘REM sleep rebound’ and occurs after the liver and kidneys have worked to process all the alcohol, which is a job in itself. The brain then decides it can now catch up on the much-needed
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