To tone “flabby arms” – often referred to as “bat wings” – you should focus on strengthening the triceps (the back of the arm), as this is where jiggling most often occurs. While you cannot “spot-reduce” fat in just one area, building muscle provides a firmer foundation that tightens the arm’s appearance. The triceps make up about two-thirds of your upper arm, making them the most important muscle group to target for firming. #armsworkout #arms #workout
