Dog Walking - Custom Workouts

I know in the tutorial video Daniel classified it as a "1" for difficulty and as a lower body workout. I've classified my walks as a "2" and total body cardio because half of the usual route we take it up a steep hill and gets my heart rate going (but it is also a challenge for my lower body). I know Kelly said in a previous reply to use your judgement for this, I'm just curious as to how other Blenders are classifying custom workouts, walking in particular.