This move is called a switch jump lunge. It is like a lunge, but with the added intensity of a jump. It’s a great lower body exercise that requires strength and coordination The starting position is a basic lunge, so place one leg back and place the other leg out front forming a 90 degree angle with your knee directly over your foot to get the form right. Now explosively jump and switch legs, landing again in a lunge and when you land. Don’t let your back knee touch the ground, because you want to sustain the tension and you don’t want to bang your knee on the ground either. Do 10 for each side, so 20 total per set. Rest for 30 seconds (or however long you need). Repeat. Try do do at least 4 sets. For a HIIT session try to do this for 15 minutes.
