Squat down, press through heels. Mistakes: Collapsing knees inward, not fully extending at the top.
Jump from lunge to switch legs. Mistakes: Not landing softly, not switching legs fully.
Hinge at hips, squat down. Mistakes: Rounding back, not squatting low enough.
Hold medball at chest, squat down. Mistakes: Letting knees cave in, not fully extending at the top.