"Tuck Jumps" is a video demonstrating a plyometric exercise that involves jumping explosively off the ground and bringing the knees up towards the chest in a tucked position. This exercise targets the lower body muscles, including the quadriceps, hamstrings, glutes, and calves, while also engaging core muscles for stabilization. The video typically focuses on proper form, technique, variations, and the benefits of incorporating tuck jumps into a cardio or plyometric workout routine to improve explosive power, agility, and overall lower body strength.