Scotts 20-Inch Classic Push Reel Lawn Mower #2000-20
Push mowers are great. Not only do you burn extra calories, but you save the environment and yourself from nasty fumes and gasoline usage. Lightweight and quiet so you can mow whenever you like with a clean, green conscience.
I use this with my 14 inch american push reel lawn mower. It is so easy to do and makes my blades sharp as the day I bought it. I only need to sharpen once a year and this is so cheap it lasts at least 8 times.
if you have a yard - why not try giving up the gas lawnmower and get this nifty reel mower - plus i am sure a little extra cardio wouldn't be that bad.