Run Forever: The secrets to becoming an ageless athlete

`We don't stop running because we get old. We get old because we stop running.'

Is it inevitable that our running performance slides as we get into our forties and beyond? Or are there things we can do to slow or even pause the decline, master our midlife and use experience as a superpower and become an ageless ace?

In Run Forever, record-breaking GB ultrarunner Damian Hall, fifty, examines the reasons why our strength and speed might deteriorate, yet how it isn't certain if we choose to do s...