5 miles ≈ 10,000 steps

10,000 steps ≈ 500 calories

500 calories × 7 days = 3,500 calories

3,500 calories = 1 lb of fat

1 lb × 4 weeks = 4 lbs fat loss / month

4 lbs × 12 months = 48 lbs fat loss / year

Consistent walking adds up