Agni is the 'digestive fire' — your capacity to digest not only food but experiences. When agni is steady, meals feel comfortable and energy is even. Much of Ayurvedic lifestyle care is simply about tending this fire: regular meals, not overeating, warmth, and rest.
Ama is what's left when digestion is weak — a sense of heaviness, dullness, or a coated tongue in the morning. It is a traditional concept of 'residue', and the gentle response is to lighten and warm, not to purge dramatically.
Ojas is the subtle essence of good digestion and balanced living — felt as resilience, calm, a steady immune sense, and a certain glow. It is built slowly through nourishing food, sound sleep, loving relationships, and unhurried days.