Yard work and exercise at the same time!

I don't know about this one, it doesn't look all that stable. Plus, I can't see too many folks giving up the John Deere for the Lawnmower Bike.

Though you do have to admire their inventive spirit and by golly by the end of summer you'd have calves like Popeye has forearms.

Check out the 2nd picture - Zeke standing there with his hands in pockets while the Missus does the work. He's not stoopid!