There are many mudras, each with its significance and purported benefits. Some of the commonly known and practiced mudras include: Gyan Mudra (Mudra of Knowledge): Tip of the thumb touches the tip of the index finger, stimulating knowledge and concentration. Prana Mudra (Mudra of Life): The thumb, ring, and little fingers touch at their tips, believed to invigorate the body and improve the immune system. Apana Mudra (Mudra of Digestion): The thumb touches the middle and ring fingers' tips, thought to aid digestion and detoxification. Shunya Mudra (Mudra of Emptiness): The thumb presses the middle finger, believed to help with earaches and other ear ailments. Dhyana Mudra (Meditation Mudra): Hands are placed on the lap, one on top of the other with thumbs touching, often used in meditation to aid in concentration and relaxation.