Popsugar Health & Fitness Strength Training Best Dumbbell Exercises The Ultimate Beginner's Guide to the 50+ Best Dumbbell Exercises 10 April 2018 by Jenny Sugar View On One Page Photo 20 of 54 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 20 High Knees Hold one dumbbell at chest height and run in place while lifting your knees high to the level of your waist. Engage your abs as the knee comes up. One high knee on each side counts as one rep. Previous Next Start Slideshow Strength TrainingWorkouts