We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
I live in an urban area and gave up my car to the college kid who needed to travel 50 miles for an internship.
Walk. It's not hard to get you blood flowing if you only have 30 minutes to shop for groceries, pick up bandaids (seem to need them more these days), find a hardware store that still sells ONE washer (don't need a pack of 25), and find a Best Buy (good-by Circuit City) when you can't wait for an Amazon delivery. etc, You get me.
You gotta do the sex thing right for the benefits.
First, do 25 minutes of vigorous exercise with each other. Any cardio work is OK here - jogging, biking, treadmill, etc. The key is to get really sweaty. Then, do 4 minutes of vigorous showering together followed by any length of time of any activity that comes to mind.
If you've picked the right partner, the right activity and the right intensity level will easily come to mind.
Well, this comment thread was bound to land where it did. If we really want 30 min of aerobic activity linked to sex, I say you start out fully dressed and whoever is wearing the last garment gets to pick everything else that follows. That might give you thirty minutes.