Yoga is a path to serenity
To find true silence and inner peace, traditionally, there are several different paths of Yoga that are practiced : Devotion (Bhakti marg), Action (Karma marg), knowledge (Jnana marg), meditation (Raja marg).
Yoga means to unify, join, link, connect, combine, amalgamate, fuse, integrate that which is separate. Yoga is practiced to bring about health and harmony on a physical, mental and spiritual level. It doesn't matter which is the chosen path the goal remains the same, to live a wholesome and balanced life where one strives towards self realisation.