Cardio Coach Vol.4

Tuesday I went to the gym and did most of Cardio Coach Vol.4.  I this one is tough.
Here is the breakdown:

• Challenge 1 - 2:00 level 3 sprints | :30 recovery | 2:00 level 3 hill | :30 recovery | 2:00 level 3 sprint
• Challenge 2 - 1:00 level 3 hill | 1:00 level 4 hill | :30 recovery | repeat
• Challenge 3 - 3:00 level 3 hill | 1:00 recover | :45 level 4 sprint | 1:00 recover | 2:00 level 3 hill | 2:00 recover | 1:00 level 4 sprint

I did like this one and hope to work up to doing the elliptical for a full hour.  This one has better music than Vol. 2.  I give it 4 out of 5 stars