Interval Cardio

Today I was locked in and ON. I noticed increased endurance here in being able to push myself to the highest possible level on the stepmill. (Level 20) I wasn't sucking wind but of course, it was challenging but I didn't feel like I was reaching for energy.

Previous...

Duration: 30:55
Calories: 406
Average Heart Rate: 152 bpm (80% MHR)
Maximum Heart Rate: 175 bpm (92% MHR)
Fat Percentage of Calories: 12

Tonight...

Duration: 30:32
Calories: 410
Average Heart Rate: 154 bpm (81% MHR)
Maximum Heart Rate: 174 bpm (92% MHR)
Fat Percentage of Calories: 12%