Turning Back the Hands of Time

I read an article recently on aging. (Sorry, can't cite it; don't remember how it came across my radar.) According to research, there is objective age — exactly how long you've been alive on the planet (for me: 66+ years) — and there is subjective age — how old you feel. Last Saturday night I had the great fortune to go downhill skiing under the lights with my two daughters, and my son-in-law. Snow was slanting in, haloing everything in crystals, and coating the runs with silk. Flying down the slopes, my subjective age plummeted; I was at least a generation younger. Woo-hoo! Is there something you do that makes you feel like you've turned back the hands of time?