[eatsyourtacos]

It's probably more "active" sitting. If you are a gamer (especially computer gamer), you are generally not just sitting back "relaxing". Your body is more engaged and you are constantly moving your body in some way.

Sitting and watching tv you can literally be completely still for long periods of time.

[iammjm]

Consider StarCraft: Brood War, a legendary real-time strategy game. To be played well, it requires between 200-400 actions per minute (APM), with some players going even beyond 500 APM. Some games last for more than an hour. Players use both the mouse and the keyboard. There's always more to do than you can realistically do. You are always putting out fires, managing your economy, producing units, securing income, carrying multiple attacks at once, fighting tactical battles, and executing strategic goals. Yeah I'd call that a pretty active sitting :)

[mna_]

Let's be honest, most of those actions are useless keybashing and clicking. It's easy to get a high APM.

[p0w3n3d]

Depends on the game. I'd say I have two modes of sitting when programming, one is passive and my muscles ache. Another is active, when I try to use belly muscles (abs?) to keep my posture etc but... When I fall deeply into thinking I will eventually release muscles and feel worse later.

I wonder if there could be an application that would encourage active sitting

[layman51]

This is what I was thinking about too. I thought that "Active" sitting was going to be something about making sure you're not slouching, but rather adjusting yourself every so often to make sure you're sitting up straight instead of slouching off the chair.

[yunwal]

They mention reading as an example of active sitting despite the fact that it requires no more motion than changing the channel (or whatever the modern day equivalent is).

[PaulHoule]

I am thinking about stance while sitting lately. I am breathing and speaking more from my belly and that starts with posture which is neither slouched forward or back.

[tartoran]

Me too and it's something I've become more aware as I got older. In short the lesson I learned is be well stacked and relaxed at the same time with the gaze forward. Also be able to freely move around around a fixed point if needed (the sit bones connecting to a sturdy surface of a chair). I find that swivel chairs or too soft of a chair could mess up stability/proprioception. A fixed/rigid chair at the right height helps me plant my feet better into the ground, forming some a sort of a tripod for better stability. Also an eye level monitor and a keyboard in reach without having to stretch out the arms helps keep a better posture. Another thing I practice is not leaning on the backrest too much. I noticed my kid shifting to bad postures when doing homework. Just gently telling him about it from time to time and making him be aware of his improved and what a correct posture should be seems to have improved his habits.