When we smile we make ourselves feel good and everyone around us.
Smile is the start of all the practices of the Universal Healing Tao, from the basics to the most advanced. The meditation of the 'Inner Smile' is the key to relaxation, to refresh, create, transform, attract and blend energies; it serves to soften our body and its elements, knots and blockages start to dissolve so that free flow of energy is restored.
Smile to a part in your body where you feel some pain or need some healing (in this moments of discomfort, will be the last think you would think of, but give it a try!) and your truly felt smile can help alleviate or melt it away.
If you notice the portraits of the great Oriental sages and masters of self-transformation like the Taoist Immortals, Buddha, etc, there's always a inward-oriented smile in their faces, to signify the spark of inner freedom and balance the unity of yin and yang, the balance of the female and male energies within, as they are both important.
And you know what is the most important sexual secret? That's right, Smile!! As it helps keep the sexual energy in the body- allowing you to cultivate more and more energy without loss (this because we slightly contract our perineum ("gate of life and death") when we smile).
Is why we keep smiling when you do the Jade Egg practices and exercises, and of course almost through out of this holistic practice!
And smile is just not important in a sexual level but in a mental and emotional ones as well!
Smile increases the blood flow to the brain, allowing it to operate more efficiently and it reminds us of being happy, which can (sometimes!) trick the mind into thinking we're happy even when we're feeling a little low. This can boost our self-confidence, make it easier for us to believe in and develop our own abilities.