The Rainbow Flye exercise from the Drop a Jeans Size 2009 workout tones your shoulders, chest, arms, and abs. Do 2 sets of 12 reps.
Rainbow Fly. Think of hugging a giant beach ball as you do this move, meaning keep a little bend in your elbows the whole time. We'll do 10 reps right here. Aim to bring the head of the dumbbells together directly above you. This move is a great chest firming move but if you keep your abs tight, this is also a great belly flattening move, so don't let your middle sink.