What is Fasting?

It may not be the best time to say this but... does anyone know the real meaning to the word fasting? here is one of the explanation I found on the internet....

"Fasting is primarily the act of willingly abstaining from some or all food, drink, or both, for a period of time. A fast may be total or partial concerning that from which one fasts, and may be prolonged or intermittent as to the period of fasting. Fasting practices may preclude sexual activity as well as food, in addition to refraining from eating certain types or groups of foods; for example, one might refrain from eating meat. A complete fast in its traditional definition is abstinence of all food and liquids except for water." ..........Wikipedia

anyways... to me.. there are 3 types of Fasting...

The willing Fast
The Asked to Fast
The Forced into Fast

Of course... The Willing Fast is an act whereby you fast on your own free will, with superb discipline in maintaining the control over the lust for food.. some may fast willingly for religious purposes, for the right cause or maybe, the slimming purposes.. any how, these group of fasting community fast without complains, and usually, still give off a weak sincere smile due to the lack of food...

then there is ... The Asked to Fast. This group here usually fast for the cause of tradition, religion or for the sake of a good cause. oh oh oh.. not to forget, when the doc ask you to cut down a few pounds... but usually, they ask you to take in small portion 6 times a day.. now, you can see a minor difference here with this group of people and the ones above.. they will show little signs of reluctance and still, they have smile in their face because they do it because they believe in what they do

finally... The Forced into fast. This last group here Fast because they are forced into the activity, maybe for a good cause they don't believe in but everyone else around him does, religious purposes cause if they don't fast, they will be nab and punish, or simply cause they want some attention to get what they want.... anyways.. This group here, usually will complain a lot, show their sour faces, and all their true faces will surfaced by showing off rude gesture, bad services if they are at work, moody .... etc..

I always thought people who fast are always grumpy and moody... till i came in contact with a group of activist who fast willingly to gather awareness among the community around them on certain social issue.. they were smiling at me and gave me very polite greetings.. chat with me even when I felt so bad cause they waste lots of saliva and energy if I continued on but they didn't cared...because they care

so which Fasting group do you belong to? Do you believe in the cause in why you fast? Or you fast just to make people see you as someone righteous...