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Any kind of exercise, be it aerobic, walking or Yoga, changes the brain's composition, structure and the way it operates. The changes that happen to the brain:
Exercise makes our senses sharper and clearer, and we are more perceptive and have better sensitivity to our surroundings.
After exercise, the brain actually builds neurotransmitters, which are essential to its functioning, and optimal operation.
It also forms more neuron connections, helping us think and work better.
The structural changes in the brain after exercise make it more agile, young and energetic. This is because, after regular exercise, it starts to promote the body's growth cells, providing us with essential nutrients.
Running for 5 minutes a day can add years to your life.
Studies found that people who run at least 40 miles per week have healthier hearts than those who run 13 miles a week, indicating that ultramarathons do not stress or scar the heart.
Our sense of smell works in wondrous ways since the chemical composition of our surrounding change instantly and constantly. Our noses pick up volatile airborne compounds that interact with our olfactory receptors.
The information that we get from our surroundings pass through our noses and then to the core cortex in the brain. We, humans have about 400 types of olfactory receptors which is used to identify many different types of chemicals that have varying odor quality.
We can remain in stage 4 - similar to a coma or brain death - for only about 30 minutes before the brain wakes up and falls back to sleep again.
Even healthy sleepers wake several times a night, but might not be aware of it.