COLD WATER gives you what half hour of Cardio does

I can't wait to go to McDonald's to try out their new Spicy McChicken or whatever it is called. I love food, but unfortunately for me, my metabolism doesn't. Its absolutely unfair when I see my friends hogging as much, as little active as me, but yet not piling on weight like I am in final year of Med school. 

Coming to the point, some experiment has pointed out that drinking 2 litres of chilled cold water through the day will help you burn 100 additional calories. As I believe all the research and experiments that seem right and convenient to me, I chose to believe this as well. My advice to every one - drink ONLY cold water. 

Lets quantify my advice and the experiment findings now:

A friend joined a gym recently, primarily for weight loss which cost him Rs.20000 per annum.

On an average, he goes to the gym 4 days a week, does Cardio for an average of half hour, floor exercises for 10-15 minutes, and no weights because he had a fracture recently, burning about 350 calories per session. 

Now assuming he is sincere through out the year (which I'm sure he won't be):

Calorie loss in one year = 72800 kcals

Cost per 100 calories burnt = Rs.28

Time spent = 12480 minutes

Water method:

Calorie loss in one year = 36500 kcals

Cost per 100 calories burnt = Rs.0

Time spent = 0 minutes

Final result:

Follow my advice to lose 50.1% calories of an average one hour weight loss work out at the gym, but at the same time, also save money (Rs. 10020) and time (6252 minutes) calculated per annum.