When a woman wants to tone stomach muscles then she will usually start with crunches and sit ups. The problem with this is that a) it can be dangerous and do your back serious damage, b) it will not burn belly fat off your abs and c) it will tone your stomach in an uneven way because you’re only really targeting one section of your abs. To tone stomach muscles properly requires fat loss from the stomach and an exercise program which targets your obliques and rectus abdominis. Tone stomach muscles evenly all around your body and you will notice what a difference it makes to your results.