Am i notworking hard enough at Leslie sansone walk at home dvd?

[IworkForcelebs]

trying to loose weight ...bought leslie sansones 4 mile walk dvds they are divided up into obe mile each part once i was a bit tired, i checked my pedomater after mile one said i only burned 400 steps the first part is light but wow anyone else use this program what the targeted amount if steps i should be getting