Yoga means to unite, join, get connected. This unity can be understood at different planes: individual consciousness merging with cosmic consciousness, while individual prana (life force) merging with the cosmic prana is a secular way of comprehending this union.
There are several paths leading to yoga: the path of devotion, the path of knowledge, the path of self-less action. The sutras of Patanjali are the blueprint of the fourth path, the path of meditation, and the goal is the attainment of