How much Ayurveda should I learn as a Yoga teacher?

It is not the question of quantity, subject and requirement. Think of it as if you are asking which eye should I see from. You need both!! Yoga and Ayurveda are inseparable. Ayurvedic wisdom was revealed to the Rishis (seers) in deep meditative state. Both Yoga and Ayurveda have the same goal- to remove suffering and union with the Self.

Mauni Amavasya is the annual day of silence. A day of speech fasting and silence feasting. Silence is observed at the level of speech, senses, gestures, and action. From the silence of the manas/mind, one gives birth to Swayambhu (one's own purified Self). This day symbolizes the quieting of the lowly desires and upholding of the dharma celebrated by Yogis/inis and Sadhakas. A very special day for mental and emotional purification.

Gayatri Mantra and Mudras