Yoga is a group of physical, mental, and spiritual practices or disciplines that originated in ancient India, aimed at controlling and stilling the mind, and recognizing the detached 'witness-consciousness' as untouched by the activities of the mind and mundane suffering.
Yogurt is a food produced by bacterial fermentation of milk. The bacteria used to make yogurt are known as yogurt cultures. Fermentation of sugars in the milk by these bacteria produces lactic acid, which acts on milk protein to give yogurt its texture and characteristic tart flavor.