how can i loose 3 kgs in 2 weeks?

I wouldn't advise it, but eat less and exercise more. Try to make a lifestyle change instead of a quick change or the weight will just pile back on.

Run, run, and run. At least 4 miles day, twice a day, 2 miles each, for 14 days. Eat small to medium portions of food and drink waters.

You will see the difference. Just don't run too soon after meals.

- don't eat any starchy food

- only 1 serving of fruit per day, preferably in the morning

- protein for every meal (1 gram protein per pound bodyweight for your daily total)

- eat lots of non-starchy vegetables

- drink plenty of water

- don't consume anything artificial

- high intensity exercise