Day 16, Week 3, Long Core

I started looking around internet for core workouts.  I want to look some more, but for now, I'll go back to the 7 minute workout I'd done awhile back.  There was one I found yesterday that was similar.  I'll do 4 sets on rest days and 1 on swim days for now:

1. 30 sec jumping jacks, rest 10
2. 30 sec wall sit, rest 10
3. 30 sec push-ups, rest 10
4. 30 sec crunches, rest 10
5. 30 sec set-ups, rest 10
6. 30 sec squats, rest 10
7. 30 sec tricep dips, rest 10
8. 30 sec planks, rest 10
9. 30 sec high-knee running, rest 10
10. 30 sec lunges, rest 10
11. 30 sec push-ups and rotations, rest 10
12. 30 sec side-plank
13. 30 sec side-plank other side