4 ms·
> If you are sitting, it's best to use the chair back to support your back so you can recline in a 135 degrees. This idea is supported by a study that focused
by subsection1h 12y ago
> If you are sitting, it's best to use the chair back to support your back so you can recline in a 135 degrees.
This idea is supported by a study that focused only on the volunteers' backs, not their necks, shoulders, etc.