Blood pressure is not so hard to understand, but harder to control

Blood pressure is usually represented as two number ratio like this: 116/74 mm Hg.
You should read it as "116 over 74 millimeters of mercury".
The top number (systolic), the highest of the two numbers, measures the pressure in the arteries when the heart beats (contraction).
The bottom number (diastolic) measures the pressure in the arteries between heartbeats (resting between beats and refilling with blood).


The chart below, proposed by the American Heart Association represents pressure categories:

Blood Pressure   | Systolic |      | Diastolic
   Category      |  mm Hg   |      |   mm Hg
------------------------------------------------
Normal           |  <120    |  and |   <80
------------------------------------------------
Prehypertension  | 120–139  |  or  |  80-89
------------------------------------------------
Hypertension     | 140-159  |  or  |  90-99
Stage 1          |          |      |
------------------------------------------------     
Hypertension     |  >160    |  or  |  >100
Stage 2          |          |      |
------------------------------------------------
Hypertensive     |  >180    |  or  |  >110
Crisis: emergency|          |      |
------------------------------------------------

What is a Hypertensive Crisis?

A hypertensive crisis exists when blood pressure reaches levels of 180 or higher for the systolic number OR 110 or higher for the diastolic number. High blood pressure is a chronic condition. The damages it causes to blood vessels and organs usually occurs over the years. However it happens that blood pressure rises quickly and consequently and it should be considered a medical emergency.

If you suspect of having a very high blood pressure, wait a couple of minutes and test it again to make sure the first reading was accurate. There is no safe duration for blood pressure to remain in high range. Do not wait to see if your pressure comes down on its own. Call 9-1-1 immediately for emergency medical assistance or go to the nearest hospital ASAP. If you are experiencing any of the symptoms listed below, don't drive yourself unless you have absolutely no other option.
- Severe headache
- Severe anxiety
- Shortness of breath
- Nosebleeds

Uncontrolled blood pressure can lead to various bad consequences, such as:
- Stroke
- Loss of consciousness
- Memory loss
- Heart attack
- Damage to the eyes and kidneys
- Blood vessel damage (A hypertensive crisis can cause blood vessels to become inflamed and potentially leak blood, making it difficult to maintain adequate blood circulation.)
- Organ damage caused by inadequate circulation
- Aortic dissection
- Angina (unstable chest pain)
- Fluid backup in the lungs
- Loss of kidney function

Conclusion: do sport (swim, bike and run), eat healthy (broccolis), sleep, and be nice to others.

A MacDonald's BigMac buger has about 540 calories

About 160 calories per dollar. Pretty good deal, when you know that it's 75 calories per dollar for a half pound of broccoli.
In US, an average normal person, with regular exercise needs about 2000 calories/day, that is to say about 12 dollars of BigMacs: 4 burgers in total or 26 dollars of broccoli: about 15 medium sized broccoli (~14oz each).

Source from MacDonald's website.

"Dreamt" is the only English word that ends in the letters "mt"

The longest one-syllable word in English is screeched.

The longest word, according to the Oxford English Dictionary, has 45 letters and is pneumonoultramicroscopicsilicovolcanoconiosis.

The longest place name still in use is a hill in New Zealand called: Taumatawhakatangihangakoauauotamateaturipu-kakapikimaungahoronukupokaiw en uaitnatahu.

Los Angeles's full name is El Pueblo de Nuestra Senora la Reina de los Angeles de Porciuncula.

The word set has more definitions than any other word in the English language.

Man who falls asleep with itchy butt, wakes up with stinky finger

All members of Hominid have 24 pairs of chromosomes except humans who have 23. Did you know that of the macaque's with nearly 3 billion DNA base pairs, 93.5% are identical to those in the human genome. The human and chimp genomes which diverged 6 million years ago are about 98 per cent identical.

Mosquito is the most deadly animal

Mosquitoes are responsible for the most human deaths worldwide.
Apparently, each year, mosquitoes are estimated to transmit disease to more than 700 million people and at least 2 million die of these diseases.

While male mosquitoes feed on nectar and plant juices, the females need to obtain nutrients from fresh blood in order to produce eggs.
It's all woman's fault again!
Mosquito has a mouth that can pierce plant's, human's and animal's skin.

According to Wikipedia's article on mosquito, there are about 3,500 species in the world.
Female mosquitoes have sometimes a preference for some person over others due to the sweat smell. Because their favorite victims have good proportions of the carbon dioxide, octenol and other compounds that it makes their body odor so particular and... attractive! (This is the AXE effect).