In your yoga practice, you build heat. Heat causes transformation. Think of the alchemy of mixing and warming ingredients to cook a meal. When you move your body into poses on your mat, you create an internal heat that equally cooks and transforms you. Since you are a being made of an intertwined body, mind, and heart, the warmth you build in your body transforms your entire physical, mental, and spiritual self. The Sanskrit word tapas (TAH-pahs) means heat, energy, and the discipline of your practice. Your yoga will transform you through your tapas, through the heat of your practice. ~From Yoga 365, Daily Wisdom for Life, On and Off the Mat by Susanna Harwood Rubin