In many ancient spiritual traditions, including Yoga, the moon cycle was used as a guide for living and was considered mysterious and powerful. As we know, the moon rules the tides, the growing cycles of plants and trees, etc, as well as the reproduction cycles of many species. Human beings are comprised of about 70% water, and are also affected by the phases of the moon.

During a full moon we tend to feel more energetic, emotional, and are more headstrong. Related to the rising energy of the inhalation we lose our sense of groundedness. A new moon will make us more reflected, inward drawn, calm, and grounded. Related to the contracting, downward moving nature of the exhalation, we might experience a lack of motivation for any physical activity. 

Through a regular Yoga practice we become more sensitive to the cycles of the moon and as such it forms part of the teaching of Yoga, as in ancient times. For students of Ashtanga Vinyasa Yoga today it is important that on days of the full or new moon that we do not practice asana (posture). However, as Ashtanga Vinyasa Yoga is a tool for transformation, it is encouraged to consider the moon cycle as a time for study, self-reflection and/or meditation. 

At North Sydney Yoga only the early morning mysore style classes are affected by moondays. The moondays chosen are those that fall closest to the actual Australian full or new moon.