DID YOU KNOW MOST PEOPLE ONLY BREATHE THROUGH ONE NOSTRIL AT A TIME?

Around 80% of human only breath through one nostril at a time, most people don't notice this, they may simply think we use both at the same time or one of them is there to help the other one when it is blocked by a nasty cold.

Your two nostrils shift their workload back and forth in a delicate manner called the NASAL CYCLE. At any moment, most of the air you breath in travels through just one nostril, while a much smaller amount pass through the other. At some point, the nasal cycle reverses course and the workload is shifted to the other nostril.

The duration of time between nostril switching varies, depending on the individual and various other factors, but each cycle usually lasts from 40 minutes to 4 hours or so. That is why you have intervals of easy breathing even when your nose is block by a nasty cold.

It is thought that the nasal cycle could be the reason that whenever we sleep on our side, we will often switch sides throughout the night, even when we are in a comfortable position. It could just be that our body needs to switch which nostril it is breathing out of, so you feel the urge to roll over to your other side while asleep.

WHY YOUR STOMACH GROWL WHEN YOU ARE HUNGRY

Generally speaking stomach growling, or as the Doctors call it today "borborygmi", is the noise created during a series of  muscle contractions in your stomach and small intestine.

The digestive system is one big long tube that begin from your mouth to your butt. Food gets through this long tube via waves of muscle contractions, called peristalsis. These waves of muscle contraction also help to mix and grind foods, liquid, and digestive juices together. The resulting cocktail is called chyme.

The sound you hear when you stomach and intestines make noise is the result of these muscular contractions mixing and moving the chyme down the tube, as well as pushing any resultant air through your system.

The reason your stomach growl more when you are hungry is that, when your stomach and intestines are empty, it triggers a reflexive generation of contraction waves, even though there is nothing in your stomach that needs to move down. These are meant to clear out all of your stomach contents, including the mucus, any remaining food, bacteria, etc. It's your body's way of cleaning and making sure no food or other things accumulates anywhere along your stomach or intestines.

The movement happens almost at all times, but you don't hear it when the stomach is full. So the less content in the stomach the louder the noise is heard.

In order to avoid stomach growling, one just needs to eat.