Walking on sand burns a lot more calories than walking on grass because the resistance and instability provide higher resistance. The difference in the calorie burn is 30% to 50% more when walking on sand, depending on walking duration and speed. Grass provides a well-balanced workout, involving muscles more than pavement but not as much as sand, and is ideal for beginners or for those who want a moderate workout.
If maximizing calorie burn and muscle activation is your objective, sand walking is the preferred option. Yet, if you want an easier workout with lower strain, grass walking is a great substitute. Ultimately, alternating both in your workout regimen can give you a well-balanced experience of endurance, strength, and general well-being.