The spring and summer months can make sleep feel impossible, with everything from sweltering（闷热的）temperatures and 1 late- night barbecues（户外烧烤） to loud birdsong and early sunrises to fight with.
" It's 2 common to have the unusual bad night. " says Dr Allie Hare, sleep consultant（睡眠顾问） at the Royal Brompton hospital in London. "As soon as you try to sleep, you won't sleep. "
In summer, our day- to- day 3 can change. "A regular bedtime and getting- up time is, of all the things I recommend（推荐） for good sleep, possibly the most important. " 4 Hare.
"The brain doesn't like getting too hot, "says Jim Home, a professor of psychophysiology（精神生理学） at Loughborough University. You could open a window, but that 5 letting noise and light in.
