Bodyrock.tv: Summer Abs Workout

I am pretty excited with this week workout because we'll be mainly targeting our cores and abs :) So today I did the first workout of this week.

Workout breakdown:

Part #1: 5 rounds of this entire circuit (Time Challenge)
10 reps of slide under with sandbag (I used 15lbs backpack)
10 reps of sandbag sit up
5 reps of rolling knee tuck and push up with stability ball
10 reps of diagonal knee raises (I subbed this with leg raise and toe touch)

I finished in 15:47 (could do much better next time!)

Part #2: 4 minute interval training (5 sec off/25 sec on for 8 rounds)
High knees 80-56-53-45
Pendulum 34-22-23-23