Web searches for 'divorce' rise dramatically in January as couples that limped through Christmas give up the ghost. But should we be staying together for the kids? Annalisa Barbieri asks the experts

Web searches for 'divorce' rise dramatically in the period after Christmas, and by the time the estate agents and lawyers are back at their desks, the air is thick with the sound of phones ringing. "My phones go wild come January 3rd," one estate agent said, "with warring couples who have tried to stick it out over Christmas, wanting to get...

Want to sharpen your memory or make better creative use of it? Psychologist Charles Fernyhough has been answering readers' questions and sharing advice
You can also take part in our nationwide online memory test which is part of the Guardian/Observer's Memory Week, by clicking on guardian.co.uk/memorystudy

Do you wish you could sharpen your memory? Are you frankly terrified at the report last week, showing mental acuity can start to deteriorate from the age of 45?

Then get your brain in gear as psychologist and...

Before starting an exercise routine, ask yourself a few searching questions and set some realistic goals

Why do you want to get fit?

So you want to get fit. But do you know why? You're likely to have a general idea. Perhaps it's because you want to change the way you look – to lose weight and to look more athletic. Or maybe it's because you want to change the way you feel – to be more energetic and confident. It may be that you've been told that you need to get fit for your health, or that there's an increasing sense of urgency...

Winnie Johnson's 12-year-old son was murdered by Ian Brady and Myra Hindley in 1964. But his body was never found. Now nearing 80, she tells Melanie McFadyean why she never gave up the search for him and why time is running out

The images are iconic – those unforgettable black-and-white mugshots of Moors Murderers Myra Hindley and Ian Brady. Less familiar is a haunting snapshot of one of their victims, Keith Bennett. He wears wire-framed spectacles and is smiling with the mischief and innocence of childhood. Keith disappeared four days...