From perfect discipline of the Sun, one has knowledge of the worlds.
Patanjali Yoga Sutra 3:36
"A considerable proportion of Indian mystical physiology is based upon the identification of “suns” and “moons” in the human body.”
Mircea Elliade, "Yoga: Immortality and Freedom"
The sun is a star at the centre of the solar system, All the planets revolve around it. At the Summer Solstice the sun is reaching the height of its powers, before the energy shifts and the days begin to gradually shorten again.
When you are practising expansive poses such as Trikonasana, Ardha Chandrasana, or Virabhadrasana fire up your poses by imagining a radiant sun at your centre. Re-charge and energise your system by picturing this sun brighten and expand as you inhale. As you exhale imagine warm rays of sunlight radiating throughout your body. Also, as you practice Surya Namaskar, Salute to the Sun, keep in your mind's eye an image of the sun. Feel that warm glow!
According to Tantric scriptures, the sun was nothing more than a garment of light for the Great Goddess. The popular European tradition usually made the sun male and the moon female, chiefly to assert that "his" light was stronger, and that "she" shone only by reflected glory, symbol of the position of women in patriarchal society. However, Oriental and pre-Christian systems frequently made the sun a goddess.
In astrology the Sun symbol is a dot within a circle. The astrologer Margaret Hone says, "Its symbol is that of eternity, and of the power of spirit, of primal motion from whence all else issued and was created". The sun sign may have shown the sun at high noon on high in the middle of heavens dome. According to the oldest symbolism, the circle enclosing a dot represented the primal womb, containing the spark of creation. Like the bindu within the Yoni Yantra of Hindu tradition.
At the time of the Summer Solstice use the sun symbol as a bhavana, or focus, during an entire yoga practice. Throughout the practice keep bringing an image of the sun symbol into your mind's eye. Observe what effect this has on your practice.
"I celebrate the living energy of Fire to generate energy, expansion and growth. It is the active power of response and release. Fire gets things moving and is a catalyst for change and transformation. Fire is associated with will power and conscious choice. Fire inspires me to take risks, to act on the strength of my convictions and to tap into my courage and inner strength. It lies in the spark of inspiration, the spark of the imagination, the inner spark of my love and passion and my desire for happiness. These are generated from within me and inspire my actions in the world.
As an alchemist, I seek Secret Fire, Hidden Fire or Sacred Fire, the Fire that lives within me and helps me to be in touch with what is truly important for my spiritual journey. I aim to unite my inner Fire with my outer Fire, so that every thing I do in my everyday life, and in the world, is a reflection of this union.
By uniting the two I create a doorway, an interface where my inner and outer Fire can fuse together. Their union releases spontaneity and trust in myself, a clarity of inner strength and true integrity. I picture the opening this united Fire energy brings and jump right in. A new part of my journey has begun."
Glennie Kindred, from Earth Alchemy