The opening, refreshing and closing of the seven energy centres for a better flow of energy and activity in each centre respectively. The Chakras represent a different area of our life, how we relate to that area, communicate and respond to that area depends on how open or blocked the respective chakra might be. Also how open or blocked are the chakras will also correspondence to how the energy will flow through our yoga, for example, if a specific chakra is blocked it would also block our continuous application of yoga and unconsciously pressure our mental body to stop practising yoga.
The chakra centres are found in many spiritual practices from a variety of cultures and are utilised and acknowledged/understood through different means, although all may have practically the same function and/or application. Yet each culture might add more/different depth and knowledge of these energy centres that would benefit vastly all those who wish to utilise it.