Asana, Sanskrit verbal root “Aas” means “to sit” ‘state of existence’ or “Asi” means “To be”. Asanas are certain special patterns of postures that stabilize the body and mind. They aim at establishing a proper rhythm in the neuromuscular tonic impulses and improving the general muscle tone. Asanas help in the healthy functioning of the body and also leads to suppleness and ease of movement. Asana benefits the physical body and brings in emotional stability. They teach poise, balance, strength and calms down the mind in preparation for meditation.

‘Prana’ -- vital energy or life force or Qi and ‘Ayama’ -- extension or expansion. (i.e. dimension of Prana). Pranayama are practices that are designed to bring about voluntary control over respiration. The main purpose of Pranayama is to gain control over the autonomous nervous system through breath control and by its influence on the mental function. It is useful in higher Yogic practices like Meditation. Pranayama brings you into harmony with your own energy. Working on your energetic body is the logical outgrowth of working on your physical body.

Dhyana -- dhi and yana, Dhi means to perceive, think, reflect, wish, or desire. Yana means path, course, or a journey. Dhyana would mean a process, path, or vehicle to properly think or reflect.