To help you get your muscles toned in this season Body & Soul is featuring one exercise every week. We’ve consulted with personal trainers on the Island and each week one of them explains an exercise for a specific muscle or group of muscles. In every case the exercise is simple enough for you to do at home so there’s no excuse for you not to at least try.This week Don Peden, of the Olympic Club, shows how to do dumbbell kickbacks to firm the muscles of the upper arm. Visit www.royalgazette.com for his demonstration video.Exercise: Dumbbell kickbackMuscles used: tricepsTechnique:1) Bend at the waist with knees unlocked, not bent not straight2) Keep back flat not arched3) Bend elbows keeping them high4) Slowly straighten the elbow by pushing the forearm back5) As you straighten the arm twist the forearm, bringing the palms face up6) Hold for a few seconds7) Slowly re-bend the elbow8) Repeat steps four to seven, 20 timesDr Peden recommends dumbbell kickbacks be preceded or followed by an exercise that works the biceps muscle. This combination should be done at least twice a week.