Yoga means to connect ourself again with God, or Krishna. This practice of yoga, always thinking of Krishna, is very easily accomplished by chanting Hare Krishna maha-mantra, if you chant Hare Krishna, Hare Krishna, Krishna Krishna, Hare Hare, Hare Rama, Hare Rama, Rama Rama, Hare Hare. Twenty-four hours it can be practiced. There is no expenditure, there is no loss, but the gain is very great.
From a lecture by Srila Prabhupada, Bhagavad-gita 7.1 — Durban, October 9, 1975