When I was younger I regularly clocked up eight hours' sleep. Now, at 47, the perimenopause haunts my nights and turned me into an insomniac. So can a 'Human Regenerator' cure me?

As I step into the machine, which looks like a cross between an MRI scanner and a tanning bed, I have a vague notion of turning myself off and on again, like a computer, which sounds marvellous.