Here are some helpful links to understanding The Yoga Sutras by Patanjalihttps://swamij.com/yoga-sutras.htm
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One of SEVERAL energy systems, the chakras are subtle energy "wheels", that are concentrations of pranic energy in areas of our physical and emotional bodies. Thus, the subtle energy, physical and emotional bodies are intertwined. The study of chakras can help the yogi achieve a more balanced, nuanced life, awakened to the subtle workings of nature.
Ayurveda is an ancient Indian science, which contains medical knowledge that is relevant even today. Its origin can be traced back to the Vedas, universally accepted as the oldest available texts. vedicine.org