Hayley Madigan on Instagram: "Biceps and Triceps Dumbbell Only Workout 💪🏼 Taken from my new @growgirlapp that is officially Live! Ad 1) Hammer Curls x 10,8,8 This means 10 reps for your first set, 8 reps for your second set and 8 reps for your third and final set Aim to increase the weight of the dumbbell with each set if you can. 2) Overhead Tricep Extensions x 15,12,8+ Dropset Aim to increase the weight of the dumbbell with each set if you can, then on the third and final set…