Meditation is a specific technique for relaxing the mind and achieving a state of awareness that differs significantly from the regular waking experience. It is the way of comprehending all levels of ourselves and, ultimately, experiencing the core of awareness inside. Meditation can be used as a tool for change, to manage pain and illness, and to reach spiritual goals. The aim of yoga is to lead an ethical life based on spirituality, which includes following a moral code called yogic philosophy. This requires developing oneself physically, mentally, and spiritually. Spiritual growth involves understanding one's own nature and that of others, finding meaning in one's life, and reaching a state where death is not feared. Yoga is also a way of living rather than a set of techniques. It involves practicing certain habits that promote health and longevity. These include eating healthy food, getting enough sleep, exercising, and connecting with others. Hatha yoga is a physical practice that aims to strengthen the body and purify the soul. Ashtanga yoga is a series of eight steps designed to build mental and physical strength through repetition. Anusara yoga is a collection of tools used for personal transformation including meditation, mindfulness, loving-kindness, and creative expression. Karma yoga asks everyone to perform an act of kindness at least once a day.