Of everything in the daily routine, abhyanga — self-massage with warm oil — is the practice with the largest gap between how much the tradition asks for it and how often anyone does it.
The classical claims are unusually specific. Charaka lists abhyanga as a daily observance and says it delays ageing, relieves fatigue, pacifies Vata, improves vision, nourishes the body, lengthens life, improves sleep, and makes the skin firm and resistant. The three places named as most important are the head, the ears and the feet — and if you only ever do those three, you have most of the benefit.
Winter is when it matters most, for a plain reason: cold and dry are Vata's own qualities, and oil is the direct antidote to both. Skin that cracks, joints that grate, sleep that will not deepen, and the specific restlessness of a cold December are all, in this system, the same problem.
How to do it without adding an hour to your morning. Warm the oil — bottle in a mug of hot water while you do something else. Sesame for most people in winter; coconut if you run hot; mustard in cold damp regions, sparingly. Long strokes on the limbs, circles at the joints, clockwise on the belly, and time on the feet and scalp. Give it ten to fifteen minutes if you can, five if you cannot. Then leave it on while you do something else — this is the part people miss; the absorption time matters more than the massage time. Warm bath afterwards, and soap only where you actually need it.
An evening alternative if mornings are impossible: padabhyanga, feet only, before bed. Three minutes, and it is the most reliable non-pharmaceutical sleep intervention in the whole daily routine.
When not to. Over an ama-heavy system — coated tongue, heaviness, no appetite. During acute illness or fever. Immediately after eating. Over active skin infection or open wounds. In heavy Kapha aggravation with congestion, where dry udvartana is the correct substitute. And immediately after purification therapies without guidance.