“Dhouthivastistathā neti trātakam noulikam thathā kapālabhāthischaithani shat karmāni prachakshatell'.

The six acts are named Dhouti, Vasti, Ne'ti, Trātaka, Nauli and kaphālabhāti. These six acts that purify the body should be kept secret as they produce various wonderful results and are held in higher esteem by great yogin-s / Hata Yoga Pradeepika.

The shat karma are very powerful practices that can never be learned from books or taught by inexperienced people. In India there is a tradition that only those who are instructed by the Guru can teach others. One may think he has the capacity to teach, but actually he may not have adequate experience or knowledge to guide others proficiently, and this applies to the shat karma in particular. If unqualified people teach them they are likely to make serious mistakes. Also one can make mistakes if one practices them independently without the instruction-s of Guru.

•   Yogaha Chitta Vritti Nirodhaha
    By so controlling the mind we reach our original state. - Patanjali

•   Manaha Prashamano'payaha yogahal
    Yoga is skill methodological trick to calm down the mind. - Vasista in yoga Vasista.

BKS Iyengar Yoga Tips :

•   Yoga releases the creative potential in life”

•   “Age cannot be the problem coming in the way of practice one need to have strong will
    power in one’s practice”.

•   The art of teaching is tolerance.

•   Humbleness is the art of learning.

•   A good teacher helps you explore to the maximum.

•   Words fail to convey the total value of yoga. It has to be experienced.

•   Yoga is a light which once lit will never dim. The better your practice, the brighter the
    flame.

•   After a session of yoga, the mind becomes tranquil and passive.

•   Yoga is the union of the individual self with the universal self.

•   The aim of yoga is to calm the chaos of conflicting impulses.

•   The body is your temple. Keep it pure and clean for the soul to reside in.

•   Āsanas keep your body, as well as your mind, healthy and active.

•   Body exists in the past and mind exists in the future. In yoga they come together in the
    present.

•   The Practice of yoga helps to change a person’s mental attitude in a positive way.

•   The intensity of the stretch should increase and rejuvenate from moment to moment.

•   A yogi’s brain extends from the bottom of the foot to the top of his head.

•   The movement of the body and the intelligence of the brain should synchronize and keep
    face with each other.

•   If you practice yoga everyday with perseverance you will be able to face the turmoil of life
    steadiness and maturity.

•   The practice of Asanas purges the body of its impurities, bringing strength, firmness,
    calm and clarity of mind.

•   Twisting Asanas penetrate deep into each layer of the body and ultimately into the
    consciousness itself.

•   Reclining Asanas feel the inner mind touching your entire body even the remotest parts
    where the mind does not normally reach.

•   When the mind is controlled and still, what remains is the same.

•   Relaxation begins from the outer layer of the body and penetrates the deep layers of our
    existences.

•   An intellectual mind that is unconnected to the heart is an uncultivated mind.

•   We can rise above our limitations only once we recognize them.

•   The brain must be calm, the body active.

•   The regular, persevering and alert practice of yoga is the foundation for stabilizing the
    consciousness.

•   The ethical discipline of the asana comes when you extended your body correctly, evenly,
    and to the maximum.

•   It is while practicing yoga asanas that you learn the art of adjustment.

•   Focus on keeping your spine straight. It is the job of the spine to keep the brain alert.

•   Total extension brings total relaxation.

•   The rhythm of the body, the melody of the mind and the harmony of the soul create the
    symphony of life.

•   In pranayama, your intellect should be as firm as a burning candle in a windless place.

•   Yoga is the golden key which unlocks the door to peace, tranquility and joy.

•   Health is not a commodity to be bargained for. It has to be earned through sweat.

•   Never perform asanas mechanically if you do your body stagnates.

•   Hence, control the breath to restrain the wandering mind.

•   Fear and fatigue block the mind, confront both squarely, and then courage and confidence
    will flow into you.

•   When stability becomes a habit, maturity and clarity follow.

•   Intensified action in yoga brings intensified intelligence.

•   Yoga is a mirror, to look at ourselves from within.

•   Your whole body should be symmetrical. Yoga is symmetry.

•   Yoga is for all of us. To limit yoga to national or cultural boundaries is the denial of
    universal consciousness.

•   Freedom with discipline is true freedom.

•   Keep your brain calm and quit, let your body be active.

•   Spiritual yoga uses the intellect of the heart as well as the head.