31C

Supersets!

Do 1 minute exercise A, then 1 minute exercise B, then rest 30 seconds. Repeat same two exercises for a total of 3 rounds. Rest 2-4 minutes after each group of exercises, then move on to the next one.

1A: Swings...any kind you want. Do normal, alternating, single, overhead...and change each round if you want.
1B: Planks...whichever variation is challenging. Mix it up.

Set 2 is actually completely different. sorry! lol! For Set 2, do 30 seconds squatting with weight in right hand, then 30 seconds pressing with weight in right hand. Then 30 second squats weight left, 30 seconds press weight left. That's one round. Repeat for a total of three.

2A: Squat with offset load (hold one heavy weight on one side)
2B: Single Arm Presses

3A: Double dumbbell or kettlebell deadlifts (hold one in each hand)
3B: Bicep Curls/Tricep Extensions/Upright row (weights under chin, elbows to ceiling)
For this round: do deads each time, but switch up the upper body. Bi's first round, tri's second, etc...

4A: Situps (weighted)
4B: Double KB or DB Bent Row