Sitting becomes uncomfortable largely due to the length of time in a particular position.
A chair may support the body well for a short time and poorly after an hour, yet you may be distracted in work or entertainment and not realise. An upright position may feel useful during conversation and unnecessarily effortful during quiet reading. Leaning back may provide recovery, then become stale through lack of movement.
Discomfort may not therefore be a problem of posture but the attempt to hold one posture as though good sitting were a shape rather than a changing relationship with support.
Sit Better does not ask you to remain perfectly upright.
It asks you to distinguish among:
The aim is not to find the perfect position in the chair but find the position as appropriate for the moment.
Sit in a chair with your feet able to contact the floor or another stable support.
Before changing anything, notice:
Next allow the chair to support more of your weight.
Then gently lengthen through the crown without lifting the chest or forcing the lower back.
Let the shoulders and jaw remain at ease.
Take three regular breaths.
Now explore three positions:
Notice what each position makes easier or harder.
After several minutes, stand, walk briefly or change position.
Do not aim to maintain one position for a long period. Persistent or severe pain requires appropriate professional assessment.
Sitting is not a single posture but a system of changing configurations. The body continuously integrates contact pressure, joint position, muscle activity, vision and the demands of the task.
Body schema supports this organisation largely outside conscious awareness, while deliberate attention can make habitual compression or effort easier to notice. Body representation is adaptable and shaped through sensory and motor experience rather than fixed as one permanently correct alignment.
The proposition of this practice is that support, variation and periodic movement is more functional and beneficial than holding an idealised position through constant muscular effort. Factor conscious movement and relaxation with structure into your sitting practice.
Traditional standing instructions can be adapted to sitting without making the chair a part of a formal stance.
Weight is received through the sitting bones and feet. The crown rises without the chest being displayed. The joints remain available and the breath continues.
The principle of sung remains the same: release what is unnecessary without losing organisation.
A practitioner does not become integrated by refusing support. Nor do they become relaxed by collapsing into it. The chair becomes part of the structure, just as the ground is part of standing.