Push lawn mowers are better for the planet and your waistline than gas guzzling mowers. Some people think push mowers are more work, and they are somewhat, but not THAT much more anymore.
Most modern push lawn mowers have stronger blades, and work better, so it’s not like you see in those old movies, where some poor kid can barely move the mower. You’ll also need to rake, but that’s another good workout, plus you can gather up the clippings and compost them.