In honor of Earth Day, try an activity that’ll help save the planet and burn calories all at the same time. These estimates are based on a 145 pound person.

Bike to and from work: If your round trip ride takes an hour, your commute is worth 526 calories.

Spend two hours tending to your organic garden: Bend, squat, dig, rake and water to burn off almost 600 calories.

Recycle: Spend 20 minutes sorting glass, cans, plastic and paper, then take it all to the curb or recycling center to zap 93 calories.

Walk to and from the farmer’s market: If your entire shopping excursion takes an hour, you’ll burn 205 calories thanks to your walk and toting around that big bag of fresh fruits and veggies.

Plant trees for an hour: Lift, squat and dig your way through 313 calories.