Yoga is not just physical act
First thing what we need to be aware that we are not just the physical body. Breath, mind, memory, intellect, ego and soul is a part of our body. Never mistake Yoga postures to be simply a physical act. Its more than just physical. Our Emotions is an outward appearance of subtle body expressions of subtle layers on our physical body. In life You would have noticed when you balance your body your emotions getting balanced.
Performing yoga is not just a physical act. Every layers of our existence are involved it. It is just a matter of how our physical body is linked with with our mind and emotions. Yoga is exploring the connection between our body and mind. Every cell in our physical body produce energy. Totality of the energy produced by our body is what we call our mind. Our mind and emotions are very strong. The more we practice yoga as a regular routine you start realizing the connection with the subtle layers. Perfect practice with proper understanding brings flexibility and balance in our personality, health and happiness.
Forward bends allow you to become more understanding acceptance and flexible to people and situations. Backward bends gives you strength and courage to face and overcome the setbacks in life. Twisting releases all fears and inhibitions that stop you from moving forward. Side bends releases anxiety and depressions. Breathing exercises gives you the inner and mental stamina to give your best effort in personal and professional life. Daily meditation develops intuition so that you can feel inner voice and chose what can lead you towards joy and happiness. All these life changes happen during your yoga practice. Never mistake yoga to be just physical act