Perform each exercise for 1 minute.
A1. Elbow to knee crunch (Athleanx does a good YouTube video on this. It’s just hidden somewhere in his ab videos, there isn’t a separate demonstration video and I can’t upload videos on here.
A2. Hollow rockers (if low back gets tired, pause and do 1 bridge hold for 10 seconds)
A4. Rear foot elevated split squat, so 2 minutes here
rest 2 minutes
B1. Side plank
B2. Drunken mountain climbers
B3. SL RDLs