Guhyasamaja is one of the oldest tantra system of the subtle body (chakras, channels and winds) allowing practitioners to gain access to the subtlest level of mental activity. Guhyasamaja means secret (hidden or obscured) assembly. It is classified as highest yoga father tantra. It is often called the King of Tantras. After taking the Guhyasamaja Empowerment, it is necessary to practice daily Six session Guru Yoga and Short Sadhana of Guhyasamaja.