Yeah I think Viagra sends the blood from the upper brain to the lower brain.
But beware, I think I read that Viagra causes vision disturbances as well, so you might flunk the eye chart.
And it might be hard to explain to the doc why, umm, you know, you're at attention and ready for duty like a good boy scout
...unless of course she's cute! If that's the case make sure you're her last exam for the day
All kidding aside, I must admit I had been feeling pretty crappy in the last year or two. I have my class 3 medical coming up next January (PPL, Canada), with ECG. My wife is a physician. She suggested in no uncertain terms that I needed
exercise. It took me a while. Well I am up to 102 km on my bike this week, and have been biking and power walking for a few months now. Feel much better, even knocked off a few pounds. I donate blood regularly (don't worry I wait 48 hrs before flying which I do for fun, not work) and noticed a distinct improvement in my blood pressure when they tested me prior to giving.
It sounds like a pain, but exercise (and diet, cut out the salt too) make a huge impact. Right now my goal is about 30 km a day on the bike when weather permits.