Who needs a gym when you've got a yard and garden? Here's how many calories a 180-pound person would burn in 30 minutes of activity:

Sitting quietly in the garden: 40

Raking leaves: 162

Trimming shrubs manually: 182

Weeding: 182

Chopping wood: 243

Mowing lawn with a push mower: 243

Chasing squirrels away from birdfeeders: 50,000 (Just kidding!)