floor in legs crossed position, which is considered one of the best for back muscles support. Why am I mentioning this? It's because the humans by definition are not chair-sitting creations and therefore we need to take care when sitting in order to make the sitting experience as pleasant and as safe as possible. I understand that this sounds funny to some but the truth is that all the above is very important and should not be overlooked when searching to buy a chair to sit on it in front of the computer. 3. Sit straight, don't lean forward. This sitting position is the best. If you can't see what's shown on the display, it's better to bring the display a bit forward rather than lean towards the display. Leaned once, it can become a habit and later a person tends not to notice that he or she leans forward trying to see the screen content. 4. Allow space for your legs and your arms. This is necessary in order to be able to stretch and change the legs position. Being crammed into a small space doesn't work well with a human being, who needs the space to feel comfortable. We tolerate the underground, trains and buses only because we can't live without them. If people had a choice, the majority of them would choose their own jets to go anywhere -- unfortunately, this is not an option in our world. But in your own house you can and should