Does it matter what I eat?

Healthy eating habits should matter whether you are trying to lose weight or not. However if you eat unhealthy and exercise at the same time you will probably just end up maintaining your weight instead of losing it. At least that's what happens with me. You will see better results if you control portion size or as an example eating an apple or carrots or something like that instead of chips with your lunch. I hope that helped )

Yes, and no. It depends on your goals and your workouts as well as what you eat.

If you wanted to not work out at all, and just loose weight, and you didn't care if it was fat or muscle, then yes, you could eat anything you wanted and just count calories and loose weight. But you wouldn't be any healthier.

If you want to just loose fat, then you'll have to work out, and then you'll need protein, and you should go read some topics about that for more detail.

If you want to loose fat while building muscle, you'll want high protein, low fat and low carb.

If you want to loose muscle (which is kinda rare, but say your goals have changed and you're trying to go from sporty girl to supermodel), then you'll have to run a ridiculous amount, and you'll want to eat moderate to low protein, but it still has to be lean, and you'll eat moderate carbs. You'll find less info on that, its not very popular.

Sigh. Theoretically, Yes, you can eat whatever form of calories so long as you don't go "in the red". Fat loss merely equates to calories in versus calories out.

So, the calories part is fixed in that calories are just calories, so it doesn't matter what food they come as. Note, metabolism on a biochemical level is the oxidation of glucose in the presence of oxygen in order to produce ATP (energy), water, and carbon dioxide. The cell doesn't differentiate where this source of glucose came from!

However, the calories out part, we do have a bit of control over in exercising and how we eat. Obviously, exercise just burns more calories quickly. How we eat is a big factor as well. If we eat several small meals throughout the day vs. one big meal, our metabolism (or the rate at which we burn calories) increases since our body doesn't go into "starvation mode". Also, certain foods require more energy to metabolize vs. others - in fact, we even have negative calorie foods that take more energy to digest as compared to their calorie content. Likewise, some foods keep us satiated longer and give a slow steady release of glucose to the bloodstream thus preventing us from overeating while maintaining blood glucose levels (like oatmeal and various soluble fibers). Other foods, rich in insoluble fiber keep our digestive tract clean thus aiding in overall digestion.

Anyway, my point is: strictly speaking yes,, you can eat whatever and lose weight. Someone somewhere did a 30 day Mcdonalds only diet and lost weight, but overall health should be the major part of any weightloss program. And, to be fit, overall physical health, muscle tone, and weight are important. So, eating healthful seems beneficial.

http://www.youtube.com/watch?v=66boOY4xXGU&feature=relmfu check this guys vids out he will show you good nutrition and other helpfull things to lose weight but hes hard core and since ive been following him ive lost 3 pounds in 2 or 3 days of pure fat