Chest muscle training~Dumbbell fly

Lie flat on the flat surface. Start by holding a dumbbell in each hand, placed above your chest, with your elbows slightly bent and your palms facing each other.

With the angle of your arms unchanged, take 3 seconds to press the dumbbell down until your upper arms are parallel to the ground.

Pause and then push the dumbbell back to its original position. Do three sets of twelve moves.

Slowly pressing the dumbbell weight 12 times can activate more muscles.