This is why you struggle to fall asleep in hotel beds
Briefly

Even when you stay supportive luxury hotel rooms, an unfamiliar environment can wreak havoc on sleep patterns. The 'first night effect' means our brains remain vigilant.
Environmental factors, such as lighting, noise, and the bed's comfort level, all affect the production of melatonin, contributing to insomnia while away from home.
Read at CN Traveller
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