Go on a water fast. Just water, two days. It will be hard but will get some results!
How To Become Thin Within Two Days?
Exercise, exercise, never stop. Eat healthy then sleep in then more exercise.
This is a really vague question, become thin from what starting point? And in 2 days? You're not going to achieve much except for water loss in 2 days.
The best way to lose weight in only 2 days is by going on a low carb diet of only lean meats/veggies(1,200 calories total) and doing cardio.
On the 2nd day, just do as much cardio as you can and dehydrate yourself to achieve the maximum amount of weight loss on the scale.
Just keep in mind its all water weight...
Really, you'd be doing yourself a favor by just dieting the natural way by making healthier decisions and creating a small calorie deficit and slowly increase it over time.
That would be virtually impossible to do. Never ever starve yourself to be thin.
Yeah, you can't lose weight that fast..!!!
2 days? No such thing!