Back Squat
Min 0 Perform 3 Back Squats
Min 1 Perform 3 Back Squats
Min 3 Perform 2 Back Squats
Min 5 Perform 2 Back Squats
Min 8 perform 1 Back Squat
Min 11 Perform 1 Back Squat
Min 14 Perform 1 Back Squat
Min 17 Perform 1 Back Squat

Build up to good Rep back squat before beginning the ladder. The goal should be to add weight at each increment.