Many people these days are stuck at desks for hours on end leaning over a computer. Our ancestors were constantly moving, lifting, reaching and running which kept them fit and mobile – especially through the back. The thoracic spine is the middle part of the back and is very important not only for spinal function but also upper limb movement. Geoff Brockenshire explains what you can do to protect your back if you can’t give your office job the flick for a life of hunting and gathering just yet.

Tonic TV |T-S048 |S03E12