yes it can brake your back so you can never sit in a chair ever again!!
a chair with a high back
My back hurts when I sit on a chair. Would chair cushions help with my back problem?
spine of back part of chair
I had to push back the chair when rising from the table.I was asked to push in the chair to make more room round the table.
maybe 3.5
u sit in a chair sraight with your back against the chair and your back becomes straight if you do it every day
Aeron chairs are the perfect chair for people with back problems. This is also a great office chair to keep you from having back problems.
The Aeron chair is a comfortable chair, it has a mesh back, and is very adjustable. Although it is pricey, it is no doubt it is a very comfortable chair.
On a hard chair
Back off the self adjuster and the e-brake adjustment.
Check your chair switch!
Over 20 mph, front brake then add back brake. Under 20mph a little front but mostly back brake. Under 5 mph back brake only. In an emergency front brake hard and add back brake hard. Change down after braking, even if you brake to a standstill.