Popsugar Health & Fitness Belly Fat How to Build Rock-Solid Abs A Fitness Trainer Recommends These 9 Things For Rock-Solid Abs 26 July 2018 by Jenny Sugar View On One Page Photo 3 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Single-Leg Russian Deadlift Single leg deadlifts require your abs for stabilization and balance, which means they're working really hard. Previous Next Start Slideshow Belly FatWeight LossWorkoutsAb Exercises