In view of the influence food has on the mind, as well as the ethical principle of non-harming, food is classified according to three principles: sattva (purity), rajas (activity, passion), and tamas (inertia, darkness). Those who practice yoga asanas should try to eat more foods of the sattvic type.
（附表）「光學會動作、練習呼吸還不夠，因為吃的、喝的、想的不健康，生活就不容易找到靈性的平衡點，」洪光明表示。