why did Buddha ban from eating meal afternoon ?

Answer 1

Buddhist monks observe a strict code of conduct (vinaya) in order to discipline the body and mind. Food is regarded simply as a means of keeping the body alive so that the spiritual path may be followed. Food is not taken in order to beautify the body or because it has a pleasant taste.
A meal in the evening may cause drowsiness and make the practice of meditation difficult. Monks discipline themselves to be satisfied with very few material things, including food. Also by eating only one meal a day, they reduce the burden on the lay community which supports them. An exception to the rule of not eating after noon is made during an illness.

Answer 2

For a monastic (a monk or a nun) food is to be regarded as medicine and not as a pleasure. In the spirit of the Middle Way it should be taken in just sufficient quantity to keep the body healthy. In the KITAGIRI SUTTA of the MAJJHIMA NIKAYA is found the following passage:

"Once when the Buddha was touring in the region of Kasi together with a large Sangha of monks he addressed them saying: 'I, monks, do not eat a meal in the evening. Not eating a meal in the evening I, monks, am aware of good health and of being without illness and of buoyancy and strength and living in comfort. Come, do you too, monks, not eat a meal in the evening. Not eating a meal in the evening you too, monks, will be aware of good health and..... and living in comfort.' "

Answer 3

He didn't want his followers to get that after lunch slump.

lol

Answer 4

may be eating too much will make people
strong and lead to sexual desires...

Answer 5

Because he had been eating since daylight !!

Answer 6

Because it was considered a sacrifice you were making.

'-)