so if we start getting that descending becomes inhibited due to the the postural habituation our brain is going to find a way to get air to the lungs so it'll start to kick in the accessory breathing musculature which is that the sternocleidomastoid the upper traps muscles called the scalenes which attach to your cervical spine and the upper two ribs you'll see the pec minor also start to help to lift the thoracic cage to help get the expansion to get the air