Dr Hilary has given TV viewers some advice on getting to sleep during the heatwave as Britain continues to bask in sunshine.
With temperatures in the mid-20s for most of us, stuffy rooms and perspiration can leave you unable to nod off.
But Dr Hilary told Lorraine he has a few tricks and tips to help you sleep soundly.
He appeared on Lorraine Kelly's self-titled ITV daytime TV programme this morning.
He said: "So, shed the duvet and just use the cover of the duvet or a bedsheet - that's all!"
"A cold water bottle instead of a hot water bottle, put it in the fridge and fill it with cold water and ice," said Dr Hilary, revealing another tip.
"Do you know - I've never thought of that?" asked Lorraine, before Dr Hilary nodded and ploughed on: "You can also put your pillowcase in the freezer or the fridge and then take it out. You have a nice thing to put your head on, then.
"You can also put cold water on the sheets as well."
He added: "A cool shower before you go to bed is another thing, and some people have a big electric fan and dangle an ice park in front of it.
"Of course, you can also have a regular fan."
