bring up the intensity level of your work (Score 2, Insightful)

Interesting question. I hate to admit it but I'm getting up there too, and in the industry I'm surrounded by people younger than me. Think positive though, that is the key. Experience brings a strong work ethic, keeping this up exposes you to different program and design environments etc and you learn how to accomplish jobs better. I'd say just take care of your health and think positive; keep taking vitamins and drinking tea and keep working your brain the same way you did when you were younger.