Eating lot of salad like cucumber, cabbage and onion is also good while eating non-veg foods. This can be under the first point regarding the roughage intake. Roughage has lot of benefits including proper bowel movement, adding bulk to the food and cleaning of body.

No vegetarian people should also drink a lot of water to remove toxins and protein wastes from the body. Am I right?

A very important tip that u can follow while cooking meat is , after buying the meat, keep it in the freezer for some time, and then clean the upper skin, the refrigeration will lead to solidification of its saturated fat on the surface, and will be removed while you clean the skin, or remove the upper skin. this way you can lean your meat from saturated fat.

It is always seen that indian diet lack good amounts of protein, but Indians who eat non veg can easily rely on them as they have excellent source of protein, as well as iron, vitamin B6, vitamin B12 and niacin.. The best choice out of all the meat forms would be chicken and fish, in any dry form like grilled/ baked/ roasted/ tandoori..