Are you sitting comfortably? Then we'll begin. But if you're sitting on a nice squishy sofa, this might make for uncomfortable reading.
While your soft, low, deep, modern sofa might look beautiful and feel amazing to sink into, it's actually bad for you.
Specialists are seeing an epidemic of problems - ranging from back, hip and hamstring pain to digestive complaints - all caused by our desire to be swallowed by a squashy sofa.
And not only have our sofas become squishier, we're also spending longer slumped on them, thanks to addictive box sets such as Game Of Thrones and on-demand TV services such as Netflix.
According to experts, we're so gripped to the screen that we're having less sex than previous generations - and, of course, all that time we're not spending in bed is generally spent sprawled on the sofa.