A good quality yoga mat is needed to avoid wrong postures and injuries. If a yoga mat is slippery or doesn’t stay flat or in shape, it will prevent you from doing your asanas properly.
Anything that is figure-hugging or too loose will hinder your movement and prevent you from doing your asanas properly.
Sometimes, when you are too focused on getting your postures and movements right, you forget to breathe properly and end up holding your breath. But steady and right breathing is an essential part of yoga.
If you are starving, you can't practice the asanas the right way. And if you are over-full, it will slow you down. So have a light snack an hour or two before your session begins.
Props may feel unnecessary sometimes, but if your trainer is using them, remember it means that these props are important - they reinforce, support, and deepen your practice.
Savasana is not simply lying around, something unimportant. The relaxation pose helps you absorb the true benefits of yoga. After completing every yoga session, end with Savasana.
If you feel pain, stop. Do not push yourself thinking it will get better with time. If you injure yourself, you may not be able to do yoga ever.
It can lead to injuries, cause distraction, and can be an irritant for others if you practice yoga in a group class.
Just focus on reaping the benefits of yoga, you don't have to comepete with anyone. Be healthy and happy.