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  • It's AumSum Time.

  • Can gargling saltwater cure sore throat?

  • No.

  • It produces soooothing music.

  • Oh AumSum.

  • Gargling with saltwater is a common method to treat sore throat.

  • But it is important to note that it doesn't cure sore throat.

  • It just provides some relief.

  • A sore throat is usually caused by bacterial or viral infection.

  • This infection activates our immune system due to which.

  • Immune cells, blood and plenty of fluids reach the site.

  • Causing redness, swelling, pain, etc.

  • But how does gargling with saltwater provide relief?

  • By osmosis.

  • Osmosis is the movement of water from.

  • Lower concentration of solute to higher concentration of solute.

  • Through a semipermeable membrane.

  • Now in saltwater, the amount of solute, that is salt.

  • Is relatively higher than the salt present in the tissues of our throat.

  • So, when we gargle, the excess fluid rushes out of our tissues.

  • Reducing swelling and thus, easing out the pain.

  • How and why do we cough?

  • It's an old form of yoga dude.

  • No.

  • Before explaining the how part, let's first understand why we cough.

  • Coughing is body's protective mechanism.

  • Which helps us clear our breathing passage of dust, microbes, irritants, etc.

  • There are two types of cough, wet and dry.

  • They maybe caused due to common cold, flu, allergies, smoking, etc.

  • Now, let us see how we cough.

  • When anything irritates our breathing passage, our brain activates the cough response.

  • First of all, we gasp in, a large volume of air into our lungs.

  • Next, the epiglottis closes off the windpipe.

  • Then, the rib and abdominal muscles contract, putting pressure on the lungs.

  • But, as the windpipe is closed, the air can't move out, so pressure builds up.

  • Finally, the epiglottis opens and air forcefully rushes out.

  • Carrying the irritant and thus, producing a cough.

  • Why does salt make food taste better?

  • Wait.

  • I will explain.

  • Salt which is basically sodium chloride makes almost everything taste better.

  • Whether it is French fries, certain fruits, curries or even cookies.

  • We like at least a little salt in all these foods.

  • According to researchers.

  • We have evolved to like salt maybe because our bodies need salt for survival.

  • What.

  • Salt for survival.

  • Indeed.

  • Sodium present in salt, maintains our blood pressure, transmits nerve impulses, etc.

  • Whereas, chloride is used to produce hydrochloric acid in our stomach.

  • Hence, to obtain salt, we have gradually developed a taste for it.

  • Thus, salt in food makes it appealing and tasty.

  • In addition to this, it is found that salt suppresses bitterness better than sugar.

  • Researchers aren't sure how.

  • Some researchers suggest that salt neutralizes the bitter tongue receptors.

  • While some suggest that on adding salt, the brain interprets the taste as less bitter.

  • Why is ocean water salty?

  • Several natural processes make ocean water salty.

  • For example, when it rains.

  • The water droplets react with carbon dioxide in the atmosphere.

  • And form carbonic acid, making rainwater slightly acidic.

  • This acidic rainwater reacts with minerals present in the rocks.

  • And forms new minerals and salts.

  • These minerals and salts are then carried by flowing water to the oceans.

  • Thus making the ocean water salty.

  • In addition to this.

  • Along the mid-ocean ridges, magma rises close to the oceanic crust.

  • Here, when the salty ocean water seeps into the earth's crust.

  • It gets hot due to magma.

  • This hot water dissolves more minerals present in the crust.

  • And carries them to the oceans through fissures called hydrothermal vents.

  • Thus making the ocean water salty.

It's AumSum Time.

Subtitles and vocabulary

B2 H-INT US salt cough sore throat saltwater salty ocean

Can gargling Saltwater cure Sore Throat? | #aumsum

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    AumSum   posted on 2019/08/05
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