Posture is the way you hold yourself, it’s the way you stand, the way you sit, any other common still position.
I have seen quite a number of people hitting the gym because they to develop their chest, shoulders or back, to have the so aimed-for “V shape”.
Then you would just look how they stand and you would realize their arms and shoulders are too much backwards, spine is too curved inside and buttocks over pushed out backwards. I would ask them to move their shoulders to the front and rotate their pelvis (thus bringing the hips to the front) and BAM ! Perfect posture! Their spine is more flat (although curved but more naturally) buttocks are not overly coming out, shoulders become large, dorsal muscle visible giving a v-shape, and the back doesn’t anymore pop out those two ugly shoulderblades.
Yes, this is the magic of a good posture.
Sometimes, you would look at a person and think “He/She’s pretty really, but I don’t know, something is wrong with him/her”. Well, have a second look, it has to be their posture that is not correct.
But posture doesn’t boil down to looks, it’s also, if not MOSTLY, a matter of health.
A good posture allows your bones to hold your weight evenly, just the way your body was designed for. But adopting a bad posture will strain your spine, your neck, your lower back, because weight constraints are applied in amounts and in ways your body is not supposed to experience. Most people figure this out after age 30, this age being when your body stops holding mistreatment, and answers gives you back whatever bad or good you did to it.
In some cases, posture is a real handicap in everyday social life. It makes you look unique, but not in a good way. It then becomes easy to imitate such a person by only reproducing their posture. But even worse, WITHOUT EVEN INTENDING IT NOR KNOWING IT some people will express such things as arrogance by exposing their chest or keeping their face up (interpreted as looking people down). Other people will look sad, weak or even miserable, by having their back bumped and a head forward looking down, which may not give a good and healthy impression.
Is there ways to prevent a bad posture?
I am not an expert but I would say posture is something you develop in the first age (until you become an adult) and keep for a your second age (adultdhood) although there may be another change at third age (when you’re old).
So the prevention of it applies only to pre-adults, then comes correction, but that’s the point of the next question.
To anwer the question now: Yes, there is ways to prevent a bad posture. But first you need to know what a good posture is.
As soon as you are aware of the notion of posture, you start to look at people and develop quickly a sense of what is a good posture, and what are the symptoms of (a short list of) typical bad postures.
The next step is to correct it.
Is there ways to correct a bad posture?
YES. But it’s easier if you’re a pre-adult, because it hasn’t yet become a long-established habit that is hard to get rid of.
Bad posture is very VERY psychologic. In my case I had always been very skinny as a kid (because I preferred to build stuff in the woods with my friends than attending meals) I grew up with tons of remarks on my skininess and would raise my shoulders up all the time and expose shoulders to look stronger. Later I had lower back problems. At the choir, the choir head would always try to fix my posture : my shoulderbaldes come out of my back and my head is looking upwards, this was the starter.
Most of the time people with bad posture don’t even know it. It only takes teaching them the concept of posture so that they start to work it out.
Then I started reading and observing other people’s posture and realized I had had bad posture, namely Posterior Pelvis Tilt + Winged Scapula.
For a teenager or a kid, just tell them and I bet they will fix it themselves.
For an adult it’s another story. While awareness on the issue will only help, I strongly recommend posture corrective exercise: