How to Eat & Digest with Yoga?

In the Ancient time people used to prefer eating fruits, salads, and raw vegetables even if raw vegetable is to cook up. It is cooked with the help of ghee (Butter Oil), mustard oil etc. The term diet  has become very important word in the modern times and everybody go on suggesting others. What to eat what not to eat without having proper knowledge. What will be the repercussion on human body. if one without confirming the intake of such foods can hamper in human body. it is better the things or vegetables, milk, tea, coffee, juices should be taken on a selective way and breakfast, lunch, evening tea, supper at night should be divided at regular intervals. Starting from breakfast (after clearing belly) and lunch. There should be an intervals of 3 to 4 hours. And lunch and evening tea. There should be a duration of 3 to 4 hours,  in from evening to dinner. there should also be a duration of 3 to 4 hours. And after having a dinner they should be long walk of atleast 1 Km. One should take regular exercise in the morning and also do Yoga under the guidance  of the teacher. (Guru) simple living and simple eating and high thinking.