dah jumpa

nick tanya aku aitu lepas main futsal.kenapa kalau minum air sejuk cepat2 brain freeze.aku tak tau jawapan tp aku offer logical explaination aku....yela kalau minum air sejuk cepat2 sure ada bhagian yg tetiba kecut jek.manalah tau sel-sel hotak ke kecut.so aku pon gunakan khidmat pakcik google

jumpa kat wiki http://en.wikipedia.org/wiki/Brain_freeze

"Ice cream headaches" result from quickly eating or drinking very cold substances. It is commonly experienced when applying ice-cream (or similar) to the roof of the mouth (palate) or when swallowing it.[8] Typically the headache appears in about 10 seconds and lasts about 20 seconds, with the pain seeming to relate to the same side of the head as the cold substance was applied to the palate, or to both sides of the head in the case of swallowing.[8]

It is the direct result of the rapid cooling and rewarming of the blood vessels in the palate, or the roof of the mouth. A similar but painless blood vessel response causes the face to appear "flushed" after being outside on a cold day. In both instances, the cold temperature causes blood vessels to constrict and then experience extreme rebound dilation as they warm up again.[9]

In the palate, this dilation is sensed by nearby pain receptors, which then send signals back to the brain via the trigeminal nerve, one of the major nerves of the facial area. This nerve also senses facial pain, so as the signals are conducted the brain interprets the pain as coming from the forehead — the same "referred pain" phenomenon seen in heart attacks. Brain-freeze pain may last from a few seconds to a few minutes. Research suggests that the same vascular mechanism and nerve implicated in "brain freeze" cause the aura (sensory disturbance) and pulsatile (throbbing pain) phases of migraines.[10]

As "ice cream headaches" require a warm ambient environmental temperature to occur, it is impossible to suffer one in cold weather.[9]

The phenomenon is common enough to have been the subject of research conducted by the British Medical Journal and Scientific American.

taraa....

aku nak mencari finger training boardla....hoh!rasa2 mak datin aku nak banje tak?!hoh!lapan taunla.....