I see lots of people, especially women gone through a rigorous cardio exercise for hours and hours. Well, I was one of them too. My belief that time, in order to lose weight fast is join lots and lots of aerobic classes. Two years later, weight training came to my life and I lost weight by doing weight training.
You see, losing weight involves many aspects, not just hours on treadmill, counting your calories intake, or starving yourself.
Let's say you happen to be quite obese and you have a high percentage of body fat. I used to be in that situation; I know what it feels like. Underneath that body fat you actually have a very strong skeleton and strong muscles. Your body has built up those muscles in order to carry all of that extra body fat when you move your body. Just the very act of standing up, walking across a parking lot, going up a flight of stairs or lifting your arms requires more effort when you're overweight, especially if you're obese. So the heavier you are, the stronger your muscles have to be just to allow you to do basic, everyday things.
Now this can actually work to your advantage -- if you manage to keep all of that muscle mass and bone density in place while you are losing body fat, then you can maintain the high metabolism that's associated with that lean body mass even while you are dropping body fat. But if you starve yourself, you're going to lose all the muscle resources you already have. It's a mistake a lot of people make. They try to lose body fat by starving themselves, and as the body fat vanishes from their body, their muscle mass also disappears. Why would the body get rid of muscle mass? Because, frankly, it doesn't need it.
The solution to all of this, the strategy I want to focus on here, is to engage in strength
training while you are losing body fat. If you do this, then
you will be able to maintain the muscle mass that you already have underneath your body fat while you are in the process of losing the fat. This will leave you with a greater proportion of lean body mass to body fat, meaning that you will be slimmer, yet you'll have the muscles that you had when you were overweight.
If you get rid of enough body fat in this way, then those muscles may begin to show -- if you're a man. If you're a woman, don't worry. You're never going to bulk up. A lot of women are mistakenly afraid of strength training. They think that if they pump a few weights they're going to turn into Lou Ferrigno overnight. They think they're going to have this competition muscle-bound body from lifting a couple of weights. Believe me, that is not the case at all. Most of those bodybuilding women are using steroids, and they've trained for years, even decades, just to produce that kind of muscle mass. Women are not built to puts on lots of muscle mass, so don't be afraid that you'll bulk up. Women who are afraid of exercising because they think it's going to make them look bigger have it all wrong.
The benefit doing this is that strength training will greatly increase the speed of your weight loss effort. It will double the effectiveness of any weight loss program you're on. Losing weight by calorie restriction alone is very, very difficult. In fact, personally, I've never been able to do that. The only way I've been able to lose body fat is to engage in exercise that includes both a strength training component and a cardiovascular component. My belief is that you cannot keep weight off just by modifying your diet alone, unless you happen to be extremely gifted with just the right genes that don't ever turn on the hunger signal for you. If you're in that situation, good for you. But you should probably think about exercising anyway, because of the other cardiovascular health and brain chemistry
benefits that are derived from frequent exercise.
Find a way to start strength training today, and your body will immediately start showing results
Just simply squeeze it and make it into juice and if you are too lazy to squeeze a lemon then cut into 2-3 slices and make fresh lemon flavored water! 
