Human body constitution is not meant for flesh eating.Many doctors today agree that meat has animal fat which leaves purine in our bodies that in turn,converts in to cholesterol.
If you are serious yoga aspirant and wish to progress in the path of yoga ,spiritual journey serious you have to check your food and eating behavior.It is advisable for serious yoga students to avoid any kind of meat, eggs ,alcohol etc ..Dairy products also contain some amount of animal fat .If you want to be a strict vegetarian you need not even take dairy products But they have different quality. Cow milk is consider as sattvic food and it does not have that concentrated fat found in meat.
Milk is consider as whole meal.infant babies grow with milk alone of course,Too much milk in quantity will produce a kind of phlegm since we can not digest it well.if you are worried about protein intake and you consume meat for protein then think about lentils,soybeans,sesame seeds cheese,tofu milk nuts etc they are the good source of protein .
Another reason to avoid meat and meat product for serious yoga students due to ahimsa/non violence .very first principal of ashtanga yoga is Yama which say to follow ahimsa /non violence
According to yoga food can be grouped in to following category
Sattvic food.It is the most suitable food for serious yoga practitioners,this kind of diet helps sadhak/yoga practitioner to maintain equilibrium between mind and body. This kind of food not only nourishes the body but also help to bring peace and harmony in our mind.mSattvic food increases Sattva guna(Purity ) .
Sattvic food includes Cereals whole meal bread,milk,fresh juice,fresh vegetables and fruits,butter,cheese,legumes nuts,sprouted seeds, seeds honey and herbal teas.
Rajasic food This kind of food is sour ,hot ,bitter in nature. These kind of food are taste oriented and feed only body at the cost of mind. This kind of food destroy the mind body equilibrium. Rajasic food increases excitement and passion and restlessness .chocolate,coffee strong herbs etc falls under the group of rajasic food.
Tamasic food. These kind of food neither good for body nor mind. Prans is withdrawn,power of reasoning clouded and body immunity decreases and dark emotion like anger,greed increases . Tamasic food includes meat,alcohol,tobacco,onion ,garlic etc.