What are good ways to lose arm and stomach fat fast?

There's no such : Thing as natural spot fat loss. You need to lose weight in general & a certain % will be abdominal & arm fat. Eat healthfully & be physically active. Calories burned must > calories consumed. To tighten ab's do crunches, reverse crunches, exercise ball crunches, pelvic thrusts, lying leg raises, side bridge & “bicycling” exercise on your back. You can tone your arms w standing biceps curl w >.