This is thoroughly answered here. Then, are chairs bad for your back?
Sitting in an office chair for prolonged periods of time can definitely cause low back pain or worsen an existing back problem. Over time, incorrect sitting posture can damage spinal structures and contribute to or worsen back pain.
Secondly, what kind of chair is good for your back? Without further ado, here's my favorite one below:
In this way, are Adirondack chairs comfortable?
Adirondack Chairs Are Quite Comfortable to Sit in. Here's the thing… Certain chairs, when sitting down for long periods of time, will leave you worn out and achy. When it comes to the Adirondack chair, instead of feeling achy and out of sorts, you will feel rested and refreshed.
Are recliners good for lower back pain?
Overall, researchers concluded that the 135-degree reclining position put the least stress on the spine and may reduce the risk of back pain. They recommend that people who sit for long periods of time correct their sitting posture and find a chair that allows them to recline.