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)