3. Keep windows closed

“Opening windows just lets hot air in, yet people do it in the mistaken belief it will cool the room down,” statesNick “Instead, you should keep your bedroom curtains and windows closed to keep the hot air and sun out. Make your bedroom as dark as possible.”

“The other issue with sleeping with your bedroom window open in the heat, is that it increases noise in the bedroom, and it may make you anxious about a burglar coming in,” statesNeil “And you need a quiet mind, and to feel safe and secure, to sleep properly. Anxiety is even worse for sleep than heat.”

4. Keep your pillow cool

“A lot of body temperature comes from head temperature, so a cool pillow can help,” statesNick “Shoving your pillow in the freezer works. Freezer blocks you would use to keep a cooler bag cool during a picnic can be handy too. Put them in a bag and inside the pillowcase, on the underside.”

5. Use a warm water bottle (yes, truly)

“It’s not a hot water bottle, it’s simply something to hold liquid,” statesNick “Put freezing cold water in your hot water bottle and put it inside your bed.”

6. Ditch the duvet

“Forget about summer or winter duvets and just ditch your duvet and top sheets altogether,” statesNeil “Instead, wear 100 per cent cotton pyjamas, which will wick away sweat during the night and keep you cool.”

7. Have a light supper

“Anything too calorific will need to be burned off by the body, which creates heat and adds to the problem,” statesNeil “So go for less calorific meals in the evening and you’ll find it easier to fall asleep.”

“Anything carbohydrate-heavy will continue to be digested by the body, which creates internal temperature,” statesNick “So heavy meals are out; keep it light with salads, fruit and similar foods.”

8. Lastly, have a favorable mindset

“We all know sleeping in the heat can be a bit of a bother, but we seem to manage just fine on holiday, even when we don’t have air conditioning,” statesNeil “Worrying about getting to sleep is one of the biggest obstacles to good sleep. So enjoy the weather and pretend that busy road outside your house is a lovely Thai beach. You’ll be sound asleep in no time…”

PurchaseHow to Sleep Well byDr Neil Stanley for ₤1099 Alternatively, if you want to acquire any other books, please go to the online TelegraphBookshop or call 0844 871 1514