I'm 36. Smoke, drink, crap diet, almost zero fruit and veg, use moisturiser from the pound shop, stressful job, zero exercise. Regularly told I look 27/28. Definitely not lifestyle for me!.
I'm on medication which means I get at least 8 hrs deep sleep a night which is the only reason I can think of that's helping me look younger because it's definitely not my genes either!.
I'm not advocating my lifestyle by the way, have a feeling I'll hit a certain age and it'll all catch up with me!.