Strengthens your upper and lower body!!! – Box squats and Burpees focus on upper and lower body strength, mainly your quads and hamstrings and calves. But they also create an anabolic environment, which promotes body-wide muscle building; this helps you improve both your upper and lower body strength.
Ultimate Functional fitness!!! - The burpee is a full Body strength training exercise. With every rep you will work your arms, chest, quads, hamstrings and Abs. After a few sets your legs will feel a bit heavy.
Box jumps and Burpees are free to do!!! – If you can not make it to the gym for a day or two, home workouts are encouraged and Burpees are one of the best ones on the list. This is because all you need is some space and to modify the exercise is just complete for a longer duration of time.
For a full demonstration ask a fitness instructor, Do it! It will give you much deserved challenge!!!