'I take my pillow everywhere': An expert's guide to finding your perfect match

Image source, Chris McCarthy Image caption, Dr Chris McCarthy says the pillow that's best for you depends on the way you sleep (branding has been obscured)

"I am one of those people," says Dr Chris McCarthy. "I do take my pillow with me."

You may have seen those people at the airport - a pillow stuffed under an arm as they drag their suitcases to check-in.

Or you might be one yourself - attached to a pillow that's soft enough to settle into but robust enough that it's not bunched into a ball by morning.

McCarthy insists he's not being fussy. He's a top physiotherapist and knows the wrong pillow can be a pain in the neck.