Stand with your feet shoulder width apart and jump straight up as hard as you can.
As soon as your feet leave the ground pull your knees as high up as you can, then extend legs out quickly to land.
Immediately jump again, repeating the motion for a set number of repetitions or a set time period.
This is a simple equipment-free plyometric exercise that focuses on improving your strength and explosion speed. This is a great move for developing a higher vertical jump, and a faster sprint. It trains the body to engage maximum strength in a minimal amount of time by decreasing the amount of time it takes for 100% of your muscle fiber to be activated. This is perfect for sports conditioning and will boost speed and agility for basketball, football, soccer, volleyball and many more.