Some sects of Hinduism for example Vaishnavism follow the purest method of vegetarianism as a really perfect even though Shaktism and Tantric sects freely consume rooster, mutton (goat and sheep meat), fish and eggs. The explanations said by Jains and Vaishnavas are: the principle of nonviolence (ahimsa) applied to animals;[181] https://www.cureayu.com/blogs/lifestyle/headache-behind-eyes