When it comes to your arms, the only thing you want waving when you say goodbye is your hand. But getting rid of that stubborn arm jiggle can feel near impossible. In a recent study, researchers sought out the holy grail of arm exercises by comparing the effectiveness of eight different arm exercises: triceps kickbacks, overhead triceps extensions, bar push-downs, rope push-downs, closed-grip bench press, lying barbell triceps extensions, triceps dips and triangle push-ups. The hands-down winner and biggest bang for your buck: Triangle push-ups. The position enables you to target all major elements of the triceps muscle – both the long and lateral heads of the muscle. Plus, since you’re in a plank position, you are also engaging and strengthening your core as you work on toning your arms.

READ MORE: The Single Best Exercise for Toned Arms, Says Science