Popsugar Health & Fitness Workouts Box Jump Exercise Alternatives If You Can't Do Box Jumps, Try These 7 Leg-Strengthening Exercises Instead 17 April 2019 by Tamara Pridgett View On One Page Photo 1 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Step-Up Find a step or a bench that, when you place your foot squarely on it, your knee is at a 90-degree angle or larger. Step up with the right foot, then the left, bringing both feet completely onto the bench. To return to the starting position, lead with the right foot to step down to the floor, then the left, until ending with both feet on the ground. Previous Next Start Slideshow Trainer TipsLeg ExercisesStrength TrainingWorkouts