iTread, Set 2, 60 minutes

Phase 1: Longer warmup plus 2 low (2%) hills.

Phase 2: medium hill (5%) flows into a 10% hill

Phase 3: intervals and sprints

-Phase 4 steady state flows into cooldown

This workout is ~54 min. long.

I like the fact that Grace's 60 min. workouts are in phases. I don't think I'd enjoy iTread or my treadmill if I just stayed at one technique of workout. It makes the workout more enjoyable and there's enough recovery time to gear back up.