Neurons in the human brain begin to die in less than 3 minutes when deprived of oxygen. Once 3 minutes has passed, permanent brain damage occurs.
Have you ever noticed students at school, slouching in their chairs? Sometimes you may even see them start yawning or lay their head down to fall asleep. A couple things may be at play here. First, they may have just not received enough sleep. The second possibility is the fact that when anyone slouches or hunches forward, they cut off about two-thirds of their oxygen transfer to their blood from their lungs. This in turn deprives the brain of sufficient oxygen to think straight and function properly. So then, the student becomes more tired and may eventually fall asleep.
As spoken about in our previous blog post, our nervous system, especially our brain, vitally needs oxygen for our cells to produce energy. Without the energy to send direct signals, or action potentials, in the brain, our brains become sluggish and our mental capacities decline.
Anybody who finds themselves slouching or having poor posture, who feels tired, can greatly help themselves by sitting up straighter and taking a few deep breaths in through the nose and out the mouth.
Till next time. Thank you,