New York, Dec 23 (TIWN): If you've ever had an event sneak up on you, you might've wondered "Is it even possible to lose weight in 48 hours?" The short answer is no, it's unlikely you'll lose any real weight in 2 days. "Experts recommend a safe level of losing two pounds per week," says Shape's deputy editor, Mary Anderson. "One pound equals 3,500 calories, so to lose a pound in two days, you'd need to eat 2,500 fewer calories"–a crash diet that no one should ever attempt.