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 practice that focuses on physical postures (asanas) and breathing techniques (pranayama). It's believed to have originated in India around 5,000 years ago. The goal of yoga is to create balance and harmony within yourself by improving your flexibility, strength, and stamina. Many people believe that yoga can also be beneficial for weight loss as it helps to reduce stress, which can lead to overeating.