There are 5 things that allow you to keep or regain your balance.
1 - The fluid in your inner ear and the signals sent to your brain by its movement
2 - Your sight and what it tells your brain about where you are in space and your relationship to your surroundings
3 - The sensory information from your feet and other parts of your body to your brain about the relative position of parts of your body and its contact with any other surface.
4 - The ability of your brain to process and utilize relevant information. (For instance, I know a woman whose interface between the hemispheres of her brain is damaged.. its easier for her to balance on one foot than shift her weight back and forth from one leg to the other)
5 - The ability of the muscles and joints to hold a position or do what's necessary to "right" your body when it gets off balance. (strength and flexibility)
Note that NONE of these things require a specific body position in order for you to to be balanced. Even if you find a position that is easiest for you to balance in, if you close your eyes, you will probably be able to sustain it for less time than if you can see something in your surroundings.
If you have stuffiness and congestion, your balance can be affected. If you lose sensation on your feet or leg, you may find out just how much you rely on the sensory info they send to your brain to know whether you are on balance. For instance, if you can't feel your sole to know that one side of your foot suddenly has less pressure to the floor, you may not realize as quickly that you are falling over. When I was learning to spin on the ice, I sometimes didn't know I was falling over until I was nearly down on the ice. And I never had any sense of which way I was falling or what part of my body would hit the ice first because of the rotation.
If you are limited in one or more of these areas, you have to rely more on the others. A short term limitation (like closing your eyes, having a head cold or having your foot go to sleep) is hard to manage because it takes time to learn to do without one of them and focus on the others exclusively. Skaters and dancers who have to perform when sick have trained to rely on muscle memory even when their head is stuffed up. A famous blind ballerina had to rely on her own body info (and sound... I forgot about the changing direction of sound because its often not constant to begin with) to know where on stage she was and what direction she was facing as she performed choreography, as well as how to stay on balance.
1 - The fluid in your inner ear and the signals sent to your brain by its movement
2 - Your sight and what it tells your brain about where you are in space and your relationship to your surroundings
3 - The sensory information from your feet and other parts of your body to your brain about the relative position of parts of your body and its contact with any other surface.
4 - The ability of your brain to process and utilize relevant information. (For instance, I know a woman whose interface between the hemispheres of her brain is damaged.. its easier for her to balance on one foot than shift her weight back and forth from one leg to the other)
5 - The ability of the muscles and joints to hold a position or do what's necessary to "right" your body when it gets off balance. (strength and flexibility)
Note that NONE of these things require a specific body position in order for you to to be balanced. Even if you find a position that is easiest for you to balance in, if you close your eyes, you will probably be able to sustain it for less time than if you can see something in your surroundings.
If you have stuffiness and congestion, your balance can be affected. If you lose sensation on your feet or leg, you may find out just how much you rely on the sensory info they send to your brain to know whether you are on balance. For instance, if you can't feel your sole to know that one side of your foot suddenly has less pressure to the floor, you may not realize as quickly that you are falling over. When I was learning to spin on the ice, I sometimes didn't know I was falling over until I was nearly down on the ice. And I never had any sense of which way I was falling or what part of my body would hit the ice first because of the rotation.
If you are limited in one or more of these areas, you have to rely more on the others. A short term limitation (like closing your eyes, having a head cold or having your foot go to sleep) is hard to manage because it takes time to learn to do without one of them and focus on the others exclusively. Skaters and dancers who have to perform when sick have trained to rely on muscle memory even when their head is stuffed up. A famous blind ballerina had to rely on her own body info (and sound... I forgot about the changing direction of sound because its often not constant to begin with) to know where on stage she was and what direction she was facing as she performed choreography, as well as how to stay on balance.