Final answer:
Yoga is the concept central to the question, involving calming the mind, cleansing the body, and raising awareness through activities like posture, breathing, and meditation.
Step-by-step explanation:
The concept central to yoga is to calm the mind, cleanse the body, and raise awareness through activities involving posture, breathing, and body and mind awareness. Yoga involves eight limbs, including postures (asana), breath control (pranayama), and meditation. Meditation in yoga allows one to reach a state of relaxed awareness and focus.