So, I have been working out pretty intensely at the gym for the past few months and have been dedicated to my cardio regimens with spinning and cardio kickboxing. I like how much fat I've been burning and how much more toned my body is, but I'm not thrilled with how slow my upper arms are shrinking and how slow my abs are toning up. I've been doing quite a bit of pilates at home and building my core, and I have been doing arm workouts on weight machines at the gym (pretty…