Back in Ten is a phrase people say on their way out of a room, and using it as a title invites a listener to wonder what happens in the interval. James Davies is listed with us on the strength of it, across two shelves at once: health and wellbeing, and sports and outdoors.
That pairing is worth pausing on. It is the combination our catalogue gives to work concerned with the body in motion rather than the body at rest, where physical effort and general wellbeing are treated as a single conversation instead of two.
At close to eight hours this is a full-length treatment rather than a quick prescription, which points to an argument developed at leisure.