How to do Dumbbell Bench Press
Lie back on a bench holding a dumbbell in each hand just to the sides of your shoulders. Your palms should be facing towards your feet in the starting position, although if you have shoulder issues then switch to a neutral grip, where the palms face each other.
Press the weights above your chest by extending your elbows until your arms are straight, then bring the weights back down slowly. To take advantage of the range of movement offered by using dumbbells rather than a barbell, take the weights down past your shoulders and bring them closer together at the top of the movement. Don’t touch them at the top, though, because that will take some of the strain off your muscles.