Recommendations for a good comfort while seated
- Very important: be perfectly seated in the back of the seat.
- Lean your backrest against the back of the seat. Backrest to be height adjusted for an effective lumbar support.
- Seat’s height to be adjusted for the feet to be firmly on ground (the angle of your legs shall be near 90°) or on the foot-rest.
- Mechanism’s tension to be regulated according to the user’s weight.
Be dynamic in your working positions!
Chairs have to be the mainspring of your workstation and should be tailored as required.
>> You can also find many tips and best practices on the website 
https://www.actineo.fr/ the Observatory for Quality of Life at Work.