In the Ashtanga tradition, we do not practice or teach on Full or New Moon. The thinking behind this is that our bodies are made primarily of water. With the Full Moon and New Moon, the water on the Earth is affected. Consider sailors and surfers, they have to be aware of high tide and low tide, all of which is affected by the Moon and Sun. The moon’s cycle affects the water on Earth, and thus, it also affects you.
New Moons can sometimes bring an energy of newness, renewal, a fresh beginning. It can also bring a mellow energy, and some practitioners will feel flat and without energy. This energy is similar to the end of our exhale.
Full Moons can bring about an abundance of energy, an extra intensity or further drive. Some people like to use this in their practice. The energy is similar to the end of our inhale. During Full Moons, I notice my children acting a bit more headstrong and wild. It affects all ages!
Over time, you may become more aware of the moon’s cycle and how it affects your practice and your emotional and spiritual state. Practicing or not practicing on Moon Days is at your discretion.