16 Mountain Climbers
14 Mountain Climbers - Knees to Outside of Elbows
5 Squat Thrusts
5 Squat Thrusts - Knees to Outside of Elbows
10 Press Ups
10 Burpees (with press up)
Stretch + Shoulder Dislocations / BW Hip thrusts / Bird Dog / 'Side Lying Windmill'
(Dependent on what I'm doing that day)
Usually gets my heart pumping, and my lower body loosened up a bit.
Sometimes on front squat day I'll only do 5 burpees in each set but make sure each one i'm exploding up as high as I possibly can and trying to use my glutes etc.
However the thing that warms me up the most is the warm up reps before my work sets.