Maintaining mobility of your upper thoracic spine is important for proper posturing of your neck (cervical spine). Neck pain and neck headaches (cervicogenic headaches) are common complaints from people who sit for the majority of their working day, secondary to poor ergonomic workstations. Slouched posturing increases shear forces in your mid-cervical spine, while also placing excessive stresses in your upper cervical spine, which can be associated with neck pain and headaches. A systematic review has shown that thoracic spine manipulation can improve pain, function, and range of motion in patients with mechanical neck pain (Cross KM, et al. JOSPT, 2011). The video below is describing basic sitting ergonomics, and discusses two exercises for people to perform frequently during the work day to help maintain mobility of the upper thoracic spine and improve the ability to maintain appropriate upright posturing while sitting.