Actor Matthew McConaughey is adding 'sleep coach' to his varied resume, although his recent advice might make mattress experts (and couples) shudder. He's downsized his bed and he's recommending you do the same.

“The best thing you can do for your marriage,” writes McConaughey in his book Poems & Prayers, “is get rid of that king-size mattress and sleep in a queen-size bed.”

That's pretty bold advice. As mattress experts we typically recommend that when you're choosing the best mattress for your sleep needs, you opt for the biggest size your bedroom can handle.

That's because a bigger bed equals more room to get comfortable. But for McConaughey, closeness is key.

And due to the so-called 'cuddle hormone', he might have a point...

'Like a football field away, man' — pros of a smaller m

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