It’s one of the most controversial topics in the yoga world, I have to be vegetarian to practice yoga?. Some say you are not truly practicing yoga if you eat meat, others say that not all body types can thrive on purely vegetarian diets.
The first principle of yoga philosophy is ahimsa(Ahinsa), which means non-harming to self and others. Some people interpret this to include not eating animal products.
There is the debate about this in the yoga community, this should be a personal decision that everyone has to make for themselves.
Everything ultimately depends on the goal of your yoga practice. If you view yoga as the way of fighting stress and keeping your body toned, you probably don’t need to force any kind of diet onto yourself.
You have to feel some deeper need to stop eating meat and if there’s none, there are plenty of studios that offer yoga routines for fitness purposes with almost no philosophy involved. So you can just benefit from yoga exercises without feeling obliged to change your lifestyle.
If you wish to use yoga to develop spiritually, you’ll need to decide if you are really prepared to change your outlook – not just your eating habits.