We think yoga means physical postures that makes us healthy. It's real meaning is coming from Sanskrit word 'YUJ' which means ' 'joining' (with Divine) which is referred as "God realization". As we saw earlier divine is present in everything in the form of soul animating you but we think we are the Ego 'I ness'. Yoga is the means of quietening the mind and focus its attention on divine through meditation. When the mind disappears, the divine unfolds itself. This is the true blissful state of your being.
That is why in the temple the deity is kept in dark with minimum light which symbolize ignorance as darkness hiding the divine. They light Chamfer which is symbolizing knowledge removing darkness ie ignorance. They break coconut which symbolizes your ego which is hard to crack! The whiteness of coconut symbolizes the divine which is pure. The sweet water in the coconut symbolizes the blissful state of peace you experience in the meditation. Hence don't reduce yoga as a physical exercise but combine with meditation for attaining peace.