This exercise is good for your arms, chest, core and glutes. Start by lying on your back with dumbbells in each hand, arms out to the side. Your knees are bent. Start by lifting your right leg sraight up towards the sky. With your bent leg make sure to press your foot into the ground to lift your glutes. At the same time lift both arms up. Hold this position squeezing your glutes and holding your core in. Drop down slowly returning to start positon. Do 2-3 sets, reps of 10-12 on each leg.