1. The Yamas are rules of moral code and include ahimsa (non-violence or non-harming), satya (truthfulness), asteya (non-stealing), bramacharya (sexual restraint), and aparigraha (non-possessiveness).
2. The Niyamas are rules of personal behavior including saucha (purity), santosha (contentment), tapas (discipline or austerity), svadhyaya (spiritual studies), and Ishvara Pranidhana (constant devotion to God).
3. Asana refers to yoga postures but in Patanjali’s initial practice, it referred to mastering the body to sit still for meditation. The practice of yoga asanas came about eight centuries later, which helped disciples ready their bodies for meditation.
4. Pranayama are yoga breathing techniques designed to control prana or vital life force.
5. Pratyahara means withdrawal of the senses.
6. Dharana refers to concentration.
7. Dhyana is the practice of meditation.
8. Samadhi is merging with the divine.