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  • It's AumSum Time.

  • Can you guess the title of my next video?

  • Hurry up.

  • Write your guess in the comments section below.

  • Is sugar bad for you?

  • Nooo.

  • Because whenever I eat sugar, I get sweet dreams.

  • Alright.

  • Now listen.

  • If we consume a lot of sugar, then it can lead to serious health problems.

  • For example, a hormone called leptin tells our brain when to stop eating.

  • However, consuming excess fructose which is a type of sugar can cause leptin resistance.

  • A condition in which our brain does not respond to leptin.

  • Hence, we overeat, resulting in obesity.

  • Moreover, excess sugar is converted into a type of fat called triglycerides.

  • Triglycerides can enter the bloodstream and form fatty deposits or plaques in blood vessels.

  • Increasing the risk of heart attack, stroke, etc.

  • Excess sugar can even bind to collagen and elastin in our skin, damaging them.

  • Thus, making our skin saggy and wrinkly.

  • Studies have also shown that women who have one or more sugary drinks per day are more likely to develop diabetes.

  • Topic: Dandruff.

  • Why do we get dandruff?

  • Tearing of pages.

  • No.

  • Dandruff is a condition in which our scalp sheds skin cells in the form of white flakes.

  • A yeast called Malassezia globosa, is one of the mostly accepted reasons for causing dandruff.

  • What a classy name it has.

  • Indeed.

  • Malassezia globosa is naturally present on our scalp.

  • It feeds on sebum and releases oleic acid.

  • Now, some people are sensitive to this oleic acid.

  • When it penetrates into the upper layers of their skin, it causes inflammation.

  • Hence, in response to this inflammation, their skin sheds a large number of skin cells at a higher rate.

  • These cells then join together forming white flakes, thus causing dandruff.

  • What is a tardigrade?

  • A tardigrade is one of the smallest animals.

  • It can grow only about 1 millimeter or less in length.

  • However, it is the toughest animal in the whole world.

  • It cannot be tougher than me.

  • Alright.

  • Now listen.

  • Scientists say that tardigrades can survive in extremely inhospitable environments.

  • But how?

  • When the environment is inhospitable, the tardigrades enter a state called cryptobiosis.

  • In cryptobiosis, they curl up into a ball like structure called tun.

  • All their metabolic processes almost stop.

  • In this state, tardigrades can survive in about minus 459 degrees Fahrenheit.

  • Even in about 300 degrees Fahrenheit.

  • They can live deep in the oceans and withstand the huge pressure of water.

  • They can even survive in the vacuum of space and can withstand radiation.

  • Later, when the conditions are stable, they again come back to their normal form.

  • Why do our muscles get sore?

  • Because they want to go to a spa.

  • No.

  • When we begin to go to gym or perform a new intense physical workout.

  • Our muscles begin to feel sore the next morning.

  • This soreness is called Delayed Onset Muscle Soreness or DOMS.

  • DOMS occurs usually after eccentric contractions.

  • What does that even mean?

  • When a muscle is lengthening and contracting at the same time, it is known as an eccentric contraction.

  • For example, when we lower a dumbbell, our biceps muscle is slowly relaxing and lengthening.

  • But at the same time, it is still contracting to hold the heavy weight of the dumbbell.

  • Similarly, in a squat, as we lower ourselves, our quadriceps muscle is lengthening.

  • But at the same time, it is still contracting to hold our upper body weight.

  • Such eccentric contractions generate tension in the muscles, creating minute tears in them.

  • Thus causing the soreness or pain.

  • Topic: Acid-Base Indicators.

  • Why does a turmeric stain turn red?

  • No.

  • You got a stain on the shirt.

  • I know what you are thinking.

  • No, there is no point.

  • None of the 2 bottles are of any use.

  • Listen to me.

  • Don't wash the stain with the soapy solution.

  • The stain will turn red.

  • See, I told you.

  • Do you know why this happened?

  • This happened because the food which fell on the cloth had turmeric in it.

  • The color of turmeric is yellow.

  • It is a natural indicator which tells us whether a substance is an acid or a base.

  • Now, let us get back to those two bottles.

  • One contained lemon juice while one contained a soapy solution.

  • When we pour the lemon juice on the turmeric powder, we see that the color of turmeric powder is still yellow.

  • This is because lemon juice is an acid.

  • Turmeric does not change its color when it comes in contact with an acid.

  • Indicating that the lemon juice is an acid.

  • However, when we pour the soapy solution on the turmeric powder.

  • We see that the color of turmeric powder turns red.

  • This is because soap is a base.

  • When turmeric comes in contact with a base, it changes its color from yellow to red.

  • Indicating that the soapy solution is a base.

  • That is why a turmeric stain turns red when it comes in contact with any kind of base.

It's AumSum Time.

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糖對你有害嗎?| 糖尿病 (Is Sugar bad for you? | #aumsum)

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    AumSum 發佈於 2021 年 01 月 14 日
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