You start to like the feeling of huge muscles in your body. With just a few wishes your lower body had turned into a massive muscular support for your upper body. Only that your upper body is a bit underdeveloped, compared to your lower body.
You grab the want and make your next wish. "I wish my abs would become huge and tight, bigger and stronger than any bodybuilder's!"
You see your abdominals inflate and pulse with each beat of your heart, slowly growing and filling with muscle.
After a few second the change was over. Your waist had now a full row of huge brick-like muscles, each of them bigger than your fists and covered in veins.
"This is awesome!! What should I grow next?", you say as you point the wand towards your body.