This depends on the present physical condition of your back-supporting muscles.

In most cases the first adaptation phase lasts several hours, the second phase on the other hand can take from several days to two weeks — until the muscles get strong and take over the task of supporting the spinal column together with the entire back. It needs to be mentioned that after two or three days there can appear a slight pain — sore muscles — this usually lasts one or two days.

This is a normal reaction to activity and is an excellent sign — it means that the previously inactive muscles have become active and are taking over the role as supporters of the spine.

After this phase sitting on a SpinaliS chair becomes an immense pleasure.