A sneak peek at The Art of Jumping Masterclass and the penultimate stride. These progressions can add immediate inches to your vertical jump approach.A sneak peek at The Art of Jumping Masterclass and the penultimate stride. These progressions can add immediate inches to your vertical jump approach.A sneak peek at The Art of Jumping Masterclass and the penultimate stride. These progressions can add immediate inches to your vertical jump approach.