The straight arm pullover is a great exercise which works the chest, abs and lats.
Equipment needed: dumbbells, flat surface or a bench.
Muscles used: pectoralis, latissimus dorsi, rectus abdominus, serratis anterior.
Start- start be lying supine (on your back) on a bench. Hold one dumbbell in each arm and with a straight arm, hold the dumbbells up so that your arm is perpendicular to the ceiling.
Movement- start by engaging your core and slowly lower one arm back behing your head. Make sure to maintain a straight arm throughout the movement and to keep the opposite arm in place. Lower the arm until it reaches either ear level or you feel discomfort in the shoulder or back. Slowly raise back to your starting position and alternate arms.