The benefits of yoga for seniors are much the same as those for the general population: increased muscle tone, balance, strength, and improved mood. Through pranayama (breathing exercises) lung capacity is increased. You can expect your posture to improve and you may sleep better. If you experience stress, yoga can help counteract that too. But keep in mind that these benefits will not come overnight after a single yoga class. Regularly attending at least three classes a week will allow you to enjoy the best yoga has to offer.