Position your nonworking hand on the leg for equilibrium. Going only at your elbow, curl the burden as superior as you can toward your torso. Squeeze your biceps at the top before lowering the dumbbell back to the beginning, but don’t let it relaxation on the ground amongst reps. https://jasperrojhb.ageeksblog.com/3939879/bicep-workout-at-home-without-equipment-fundamentals-explained