0:30 Knuckle Draggers
0:30 Active Spiderman
0:30 Jumping Jacks
0:30 Push-Up to Down Dog
0:30 Body Weight Good Mornings
0:30 Front Plank
0:30 Straight Legged Sit-Ups
0:30 Glute Bridges
5 Single Leg Glute Bridges (each side)

then at rack with empty barbell:
5 good mornings
5 back squats
5 push press