It's AumSum Time.
Why do we love junk food?
Because it looks cool bro.
No.
We love junk food.
Because manufacturers design it to activate brain's reward system.
They create perfect combination of salt, sugar, spices, which excite our taste buds.
Thus, activates our brain's reward system, making us feel good.
Now after this, when we eat regular food.
Because it does not activate the reward system, it feels less appealing.
Besides this, if we compare these foods, the quantity of healthy food looks more.
But surprisingly, they both contain the same number of calories.
What?
Yes.
Now, since healthy food also contains fiber and water, they add up to the volume.
Thus, filling our stomach.
But, as junk food does not have enough water and fiber, it does not fill us.
So, we keep eating and consume more calories, leading to obesity, diabetes, etc.
What is a stroke?
It is a new style of haircut.
No.
Through a complex system of arteries.
Our brain gets a continuous supply of oxygen and nutrients with the help of blood.
The cells of our brain alone use more than 20% of oxygen in our blood.
Hence, if the blood does not reach the brain cells, they can begin to die.
Thus, gives us a stroke.
The most common stroke is Ischemic stroke.
Ischemic strokes occur when the arteries supplying blood to the brain get blocked.
Like the roads get blocked in a traffic jam, right?
Indeed.
Due to bad lifestyle choices and stress.
Fats and cholesterol gradually start building up in the arteries and thus, narrow them.
If this build up ruptures, a clot may form blocking the complete artery.
As a result, the brain cells begin to die due to lack of oxygen and nutrients.
Thus, giving an Ischemic stroke.
What is an allergy?
It is a magic spell.
No.
Allergy is an overreaction of our immune system to usually harmless substances.
Like peanuts, milk, pollen, etc.
These substances are called allergens.
Our immune system has white blood cells or lymphocytes.
Which protect us from foreign invaders such as bacteria, viruses, parasites, etc.
These invaders are called antigens.
When a lymphocyte detects an antigen, it produces antibodies.
Antibodies destroy antigens and thus, protect us.
Now, if an allergen such as pollen is inhaled by an allergic person.
The lymphocytes of allergic person for unknown reasons think that allergen is an antigen.
Hence, lymphocytes overreact.
And produce antibodies which start attacking the allergen.
Besides this, as a protective response.
Some immune cells also trigger production of mucus, resulting in running nose.
They even give rise to itching throat and watery eyes, thus causing an allergy.
How do igloos keep you warm?
I am a little busy.
So, I will tell you about it later.
Alright.
I will explain.
Heat is a form of energy present in our body.
When the temperatures around us are low, we begin to lose heat.
The more we lose heat, the colder we feel.
Now, although igloos are made of blocks of compressed snow, they keep us warm.
Stop bluffing.
How is that possible?
Compressed snow has air trapped in it and air is a bad conductor of heat.
Hence, the heat given off by our body does not get lost from the igloo.
It stays in the igloo, thus keeping us warm.
Besides this, we know that warm air rises up and cold air sinks to the bottom.
Hence, during night.
Eskimos, i.e., people living in igloos, sleep at the uppermost part of igloo to stay warm.
What causes wrinkles?
A witch's potion.
No.
Our skin consists of two important proteins called collagen and elastin.
Collagen keeps our skin firm and tight.
While elastin gives our skin flexibility and elasticity.
It allows our skin to stretch, twist and contract.
Just like an elastic rubber band, right?
Absolutely.
But as we age, our skin produces less collagen and elastin.
Hence, our skin no longer remains firm.
It begins to lose elasticity.
As a result, our skin droops, thus causing wrinkles.
Moreover, there are some factors that can cause early wrinkling.
One of them is UV radiation of the sun.
Long term exposure to UV radiation can cause collagen and elastin to break down.
Faster than normal, thus causing wrinkles in early age.
Besides this, smoking and poor nutrition may also contribute to early wrinkling.