Watts are a great motivator and an instant effort guide for those taking part. Powerzone continues to work across the 4 zones, which now relate to a range of watts. Each session begins by building the watts required to activate cardio vascular training. Instructors then guide their class through the programme, to achieve the watts required for each target zone area, increasing and decreasing gear and speed as required. Gaining an overall higher watt output provides a clear indication of fitness improvements.