Pranayama (simple Kriya breathing) can remove all inner impurities. Keep control over your tongue to gain control over your life.
The effect of kriya pranayama can immediately give one the formless state, like the sky.
Observe how calm your mind is after practicing kriya pranayama. The more pranayama you practice in the morning, the better. When the amount of daylight increases, if one is practicing more cycles of kriya pranayama, one will experience an increase in one’s body temperature. Why? Because kriya itself is a form of fire. Kriya generates inner fire and body temperature.