Set an incline bench at a slight angle and lie face down with one hand and chest supported. Hold a dumbbell in your free hand with an underhand (palms-up) grip. Keep your back flat and core braced. Pull the dumbbell up toward your hip, focusing on engaging your lat and squeezing at the top. Slowly lower the dumbbell back down under control.
Log your dumbbell reverse grip incline bench one arm row sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.