Popsugar Health & Fitness Workouts HIIT Cardio Exercise The 13 Best HIIT Cardio Exercises to Strengthen Your Entire Body and Boost Your Stamina 7 December 2018 by Tamara Pridgett View On One Page Photo 11 of 12 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 11 Box Toe Touches Using a box, step, book, or stool, lightly tap your left toes to the box, then jump to switch feet, bringing the right toes up. Continue alternating feet. No box? No worries. Hop from foot to foot, aiming toes onto an imaginary step. Previous Next Start Slideshow Trainer TipsBodyweight ExercisesHIITCardioWorkouts