I don’t think you need it if you’re doing Insanity. I think that on top of Insanity might be too much. Just do Insanity, I swear that’s enough.
Do you think it would be a horrible idea if I did both 30 day shred and Insanity together? Obviously I would need to be very careful to not injure myself and really pay attention to my body, but I was thinking of doing 30DS in the mornings before school and Insanity after school. I'm currently in the 2nd month of insanity.