Popsugar Health & Fitness Trainer Tips How to Breathe During Bicep Curls I Didn't Know I Was Breathing Wrong During Bicep Curls — This Trainer Explained How 4 June 2019 by Samantha Brodsky View On One Page Photo 1 of 1 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Bicep Curl Start by holding a dumbbell in each hand at the sides of the body. Inhale and engage your core. Keeping your elbows close to your side, slowly raise the dumbbells to the chest, exhaling as you do. Moving with control and keeping your core engaged, inhale and lower the dumbbells back to the starting position. This counts as one rep. Previous Next Start Slideshow Trainer TipsFitness TipsInjury PreventionArm ExercisesWorkoutsPopsugar Interviews