Sitting positions usually are irregular and more twisted. But, that causes many problems with our body, our back, our neck or eyes. For that purpose, you should pay attention to the dimensions of your furniture (chairs, tables, armchairs). If you have furniture with proper dimensions, you will definitely have better posture. For example, the chairs should be 43-45 cm and the table 70-75 cm. Or, on the other hand, tall (bar chairs) can be 70-75 cm, but the table will be 100-105 cm. Having the right dimensions is especially important in your office, because that is the place where you spend eight hours sitting.