The title of this article is one of the most important things a person can remember when it comes to fitness as a whole. It does not matter how many sit-ups a person does, if they are not eating properly and training effectively, their abs will not show.
Doing 100 sit ups a day is not going to melt fat off your tummy and show your six pack that is hiding, especially if you are still eating unhealthy and not doing anything else in the gym (especially cardio).
Remember, a person can build up muscle groups easily by doing isolated training, and sadly when we do not take care of ourselves we find out quickly where our body wants to build fat up as well as opposed to other areas. Either way, if your focus is to try to lose fat in one area of your body by doing sit ups, you are spot training.
This is just a waste of your time and money.
Making sure you know your macro profile (carbs, fats, and protein levels) which make up your total calorie count is vital. People these days think carbs are bad for you because by taking them away you can lose fat quickly. This is not true. Carbs are vital for brain function and muscle building. The more muscle you have the quicker you burn fat, plus you have more energy to workout. So please, eat carbs, just do not over do it when it comes to consumption.
Fats are another thing that have a bad stigma. Did you know certain fats you get from food actually can help you lose weight and burn fat? Fat is an awesome energy source as well. Fat is also important for organ health and function. Once again, understanding the importance of what you are doing in the kitchen is much more important than learning a new ab move to do at the gym with your buddies.
So, keep your ab workouts short and effective, because what you do outside of the gym when it comes to what you are putting in your body nutritionally will be the game changer for whether those abs show come spring and summer.
Train hard, eat clean, and you will see those abs showing in all there glory sooner or later.