Alternate Leg Straddle
A similar exercise to the straddle jump , however more suited for the less conditioned.
Start with one feet at the top of a secure step box, and alternate placing one of the feet on to the ground, whilst keeping one foot on the step box at all times.
Focus on making a small jump across the step box so that you can change your foot on the top of the box.
You can make the exercise harder by placing weights in your hand - Beginners aim for a box no higher than 4 inches.