A. Hip Extensions on Reverse Hyper; 10 reps + 10 Sec hold x 4 sets; rest 2min https://www.youtube.com/watch?v=5zgOobV8skg - Done. Used a 10# medball. Felt good. 
B. Arch body complexes; 4 reps x5; rest 1 min (opposite arm/leg lift, other arm/leg lift, upper lift only, lower lift only, superman hold 10 sec = 1 rep) - Done. Posteror chain feels great. 
C. Seated Straddle Leg Lifts; 10-15 reps x 4 sets; rest 1min - Done. These are tough! Hip flexors and quads were cramping. Did 15 reps each set. 
D. Bent Knee Hollow Hold; 60 seconds x 5 sets; rest 1min - Done. This got spicy on midline. Had to rest longer after the third set. 

Had some extra time to train today, so I did some scap work:
Trap 3 Raise, Powell Raise, DB External Rot., and banded face pulls