So people what is the best way to loose weight ???
It really depends upon your lifestyle. The best way to lose weight is a strategy that will fit well within your lifestyle and also allow you to eat foods that are satisfying.
That's not saying that losing weight should be "easy" - but that it should be practical and your plan should be consistent. In some cases, you are going to have to commit to lifestyle changes - but mostly, you're going to have to make sure that it's something you can do and maintain. If it's a chore that you loathe - you're going to hit your goal and get back to things you enjoyed and be back in the same problem 3 months later.
Shoud people just do extreme sport and eat normal food ??
It really depends.
Generally, you should start by focusing on simple things. Allow yourself the extra 10 minutes to walk to a nearby destination and back. Take the stairs instead of the elevator/escalator, stand when you would normally sit and rather than sitting and thinking (or listening to music) - walk and think/listen/etc (walking has actually been shown to help in the development of neural connections).
Other simple things include paying more attention to what you eat. If you like to have candy or other snacks nearby (chips, etc) - do not buy more. If you find yourself craving - try substituting with chewing gum. The same goes for a lot of drinks (particularly soda and other sugary drinks). Substitute with water - or, if you need, try some flavor-packets that will give you flavored water without the added sugar (unless you're paranoid about artificial sweeteners... then you just need to bite the bullet).
The main thing to keep in mind is that you do need to eat - your body is a machine that requires supplies to operate. Starving it causes it to act up (and it will do counter-productive things like start storing everything as fat), and you also run the risk of malnourishment (particularly if you are exercising and want to see any kind of muscle building or toning going on). You need to make sure that you are getting your fruits and vegetables as well as a reasonable supply of carbohydrates (energy).
The carbohydrates are what you need to be paying attention to. You don't need to be counting calories or making it more difficult than it needs to be - it's very simple. Carbohydrates that you eat are like the hours you spend at work (or the salary you make) - the bigger the amount, the more money (calories) in your checking account. Your body spends calories from this account to perform actions. At the end of the month, after all bills have been paid - extra money (calories) are put over into the savings account (fat).
So, there are two ways to go about managing your weight. You can either increase your physical activity to a point where you are having to dig into your savings account to cover the costs... or you can decrease your income (how much you eat) so that you do not have to change your expenses.
Usually, you do a combination of both. Go through your local grocery story and see what kinds of 'low calorie' pre-made meals are available. Sample them, find out what you like. If they are cost-effective for you to purchase and use... then it simplifies your life and can be worth the convenience. Otherwise, look up similar recipes on the internet and see if it is more cost-effective for you to prepare them, yourself. Be sure to control portion sizes, and, as a general rule of thumb, the more colors there are in it (from things like vegetables or fruits), the better. "Low calorie" does you no good if you end up eating 4 of the things. But you want to be sure you are still properly nourishing yourself so that your body doesn't start freaking out.
But that, alone, is not likely to address a weight problem - particularly for people who (for reasons I don't pretend to understand) have a more difficult time getting their body to release fat. That is where increasing physical activity comes into play. From sports to walks, to a dedicated work out program - that one really depends upon what fits your life style (or is an acceptable change for you). It doesn't have to be an extreme sport - just something that gets you more active than you would normally be during that same amount of time.
Shoud the poeple change their food consume
Depends. A lot of Americans -love- the color brown on their plate. Mashed potatoes, gravy, fried chicken, french fries... you get the picture. Those are all very high-calorie foods (some of them with relatively low nutritional content). That doesn't mean that they are 'bad' - but that you need to monitor your intake of such foods. Try to switch from high-calorie/low-nutrient foods to those with a much higher nutritional content. Whole wheat pastas tend to be a much better alternative to fried chicken (even with heavier sauces and meat). You may actually be consuming more calories - but you are rounding out your nutritional needs much more effectively, and will be less likely to experience cravings throughout the day.
For that matter - I've found whole wheat products to, generally, be far more filling and satisfying than their 'white' counterparts. That is something to take a look at. It's a slightly different flavor and texture - but you can eat less and feel just as full. Which will be a huge obstacle in the beginning. If you are used to eating large portions, you will have to give your stomach time to shrink and not feel as hungry following a smaller meal. If you are used to eating continuously throughout the day, you will have to condition yourself to accept the 'somewhat hungry' feeling between meals (or find some other way of coping).
In the end - it really kind of depends upon how you eat, right now. It could just be that you eat too much (but you are eating the right things). Just monitor how much food you are eating and adjust it to fit your goal.
Any special forms of diets like
Ohh yes protein diet ??
Stay the hell away from them.
A lot of these 'special diets' are very, very hard on your body. They usually try to target one thing as 'good' or something else as 'bad' while taking it to the extreme. Often, the initial results are water-weight losses and others triggered by electrolyte imbalance. This weight comes back like Orochimaru every time you quit the diet, and very little actual fat loss occurs. Those that do are often because the diets literally starve the body.
I saw people of all shapes and sizes go into the military. No single diet was ideal for every person - but one general rule applied: Always eat your vegetables, proteins, and fruits. If you were losing weight (and didn't want to), eat more mashed potatoes and some extra meat... hell, eat the tray, too. If you were gaining weight, cut back on the mashed potatoes and rolls; if you had the option, select a fish or chicken over pork/beef - do ten extra of whatever exercises everyone else was doing (or run at least 10% longer).
People trimmed up, bulked up a little (even frames like mine that do not like to bulk), and got within standards. We didn't have fatkins approved diets or whatever the hell nonsense was being put on restaurant menus. If you were too heavy - your cookies were taken away and given to the scrawniest guy in the group, and you and he were both doing extra physical training (you to trim you down, him to give him muscle mass).
It is for a special project i want to collect your toughts
Well, nutrition is more of a science than an opinion piece... so I'm a bit confused about the nature of your project... but good luck with it.