Depth jumps 1 are an effective basketball-training exercise that helps to improve your vertical leap while also increasing the power of your movements. This exercise requires you to get on a raised platform or chair about one foot tall, drop down and when your feet hit the ground, explosively leap up as high as you can go. To yield the best results, do four sets with four to five repetitions in each set. Between each set rest for one or two minutes. This basketball drill is essential for athletes looking to improve their jumping ability and make maximal vertical leaps.