Altering your energy at your command
Soothing : Increasing Lunar energy
If you are feeling nervous or overanxious or in a neurotic mental state , sit with a straight spine, block the right nostril with the thumb the right hand and breathe through the left nostril. Take 26 deep breaths. This will soothe you and bring you into a calm state.
Energizing : Increasing Solar energy
If you are feeling tired, depressed or in a weird mental state (irritated), sit with a straight spine, block the left nostril with the thumb of the left hand and breathe through the right nostril. Take 26 deep breaths. This will bring Agni or fire energy and you will feel alert and dynamic.
It would be wise if we taught the ability change nostrils at will within the first three years of a Childs life.