>>9329876Osteopath here.
>How to sit?Differs according to what you're sitting on
>How to sit at desk?For writing, computing etc, get a seat wedge. This lifts the hips higher than the knees. Otherwise, with hips and knees level the angle between the trunk and the legs at the hips will be 90 degrees, and this will tend to pull your pelvis to posterior rotation, reducing the lumbar curve, causing you to slump, and increasing pressure on your lumbar discs.
>How to sit while eating?If you have to sit upright and don't have a seat wedge eg at a dining table, you will struggle unless you have good flexibility in your hamstrings. I'm going to make a big assumption, that a lot of your problems sitting could be from shortened hamstrings. Can you touch your toes in a standing forward bend with straight knees? If not, work on it.
>How to sit in lecture hall?Difficult, same as above.
>How to sit with attractive posture?>How to sit with professional posture?>How to sit with minimal long term damage?>How to sit without getting fucking tired and drifting off into a slouch without noticing?Alexander Technique can be useful. It takes some commitment to do the course of sessions. But it is different than merely trying to will yourself to sit up straight, it does work.
