Hatha Yoga is the science of using the body to accelerate the evolutionary process. Hatha Yoga is not a mere exercise. Hatha Yoga or Yogasana is about understanding the body's working strategy and creating a specific environment for the body. It also directs the energy to adjust the body to reach the spiritual level.
Hatha Yoga is a combination of the four elements Pratyahara, Dharana, Dhyana and Samadhi. Pratyahara is the process of controlling unwanted thoughts and reducing stress.
Dharana helps to control the five senses. Dhyana is the process of elevating the mind to the level of creation. Samadhi is the state of calmness. Through hatha yoga, you will become the master of your mind, body and soul.