Niyama
Niyama in Yoga Sutra emphasizes physical cleanliness, dietetic control and certain aspects of mental training. Niyama puts forward the following five regulations:
i. Saucha (cleanliness)
ii. Santosha (contentment)
iii. Tapas (austerity)
iv. Svadhyaya (introspection)
v. Iswarapranidhana (devotion to God)