If you are looking for a short cardio program to add to your routine check this out!!
It is from Shaun T's Insanity... "Fast and Furious"
it is like 22 minutes long and $20 bucks but it is AWESOME! I have completed an entire round of Insanity and let me just say this bad boy still KICKED my butt!!
If your know insanity it is like "Pure Cardio" just way shorter, harder, and REALLY intense! You still sweat like CRAZY and feel like you did a full workout!!