^Girl, you have to train your heart a bit first kahit mga 6-10 weeks muna. Start with a bit of brisk walking (I'm assuming na naging sedentary ka for 6 months) or stair climbing, jumping jacks and push-ups.
Hiphop Abs is fun cardio, did it for a time 2 years ago. 30 day I do it from time to time. Challenging siya, although bitin ako sa cardio.
Ako I paced myself, dinalasan ko muna sa gym, tapos 30 day shred (may thread tayo about this), saka ako nag-Insanity.