Human: I've been hearing a lot about the new fad of yoga. What is yoga, and does it really help you lose weight? Assistant: 
Yoga is an ancient Indian practice that combines physical postures (asanas), breathing exercises (pranayama) and meditation to achieve spiritual enlightenment. It has become increasingly popular in recent years as a way to improve physical health, mental clarity and overall well-being. Studies have shown that regular practice of yoga can reduce stress levels, increase flexibility, strength and balance, and even help with weight loss.