I'm 33 (soon to be 34), and fitter than I ever was in my 20s, with more energy.
Difference? Eating differently (low carbs, high protein), and exercising 3 times a week.
I also stopped smoking a year ago.
Quality of sleep is also way up there now.
It all helps - really does. Just doesn't stop aging :-)
Easier said than done, but I speak from experience.
It looks better and saves so much time..
But I think a bald guy with a shaved head also demonstrates a certain attitude "My hair had issues. I dealt with it. Next!"
2) If you are like me and don't like exercise much (nor the time investment) but can no longer deny its benefits, do what I'm doing and do HIIT spin cycle 3 times a week for 25 minutes. It totally works. Feel free to google it, there's a lot of interesting research at this point.
You'll not only feel stronger and look healthier, you'll also burn a lot of energy. And as you get older, maintaing strength and flexibility guards against aches, pains and injury.