Obviously there is a reason. Consult a medical practitioner.
It is sudden combustion caused without any apparent reason
Because people want jerks to people for no reason because they are mean,rude and have no lives!
due to lack of oxygen
the reason an engine "jerks" is because all of the fuel going into the cylinders are is not completely burning thus causing a loss of power...
Sudden cardiac death is usually caused by ventricular fibrillation (the lower chamber of the heart quivers instead of pumping in an organized rhythm).
Yes all forms of opiates in high doses cause uncontrollable jerks. There is no research which contributes this effect to one cause. The jerks tend to be caused by multiple factors such as body jerking to wake itself up from deep sleep and give back focused and blood flow to mussels. Second reason might be dopamine level and free radicals built up as seen in people with turrets. One thing certain the jerks progress and can be permanent even after discontinuation of usage.
A wave caused by a sudden shift in the ocean floor is called a tsunami.
A fall is a sudden movement caused primarily by gravity.
An impulse move in dance is when the dancer "tweaks" his or her body suddenly. These movements look like sudden jerks or twitches.
Sudden knee pain with no injury
It prevents the cup from toppling over in case of sudden jerks.
Sophash - Most likely, they are not jerks. If you are a teenager, most everyone thinks so. If you think they are jerks, think about what they do to be jerks. If you can make a list of 10 things that your parents do that are truly bad, then they might be jerks. If your parents would have punished you for absoulutley no reason, then they probably are jerks. NOTE: these kinds of things can NOT be on your list1. My parents grounded me - they probably grounded you because you were doing something against their perfectly normal rulesPutting things like that on your list shows that your parents are not jerks. Parents have to ground you to teach you a lesson.