Not really. 5 Pounds a day is not a healthy or realistic loss rate.
It is not healthy to lose 10 pounds in 10 days. However, in order to lose a pound a day, you must burn 3,500 calories.
It's not possible to lose 50 lbs. in 10 days. The safe rate of weight loss, according to doctors, is 1.5 lbs. per week. To try to lose more weight than that would be very difficult and definitely dangerous for health.I'm sorry to disappoint you but it's not possible. You cannot lose 50 pounds of body fat in 10 days by any natural means.
10 lbs in 3 days
I've tried it and I did lose 10 lbs. in 3 days. I was able to maintain the lost weight.
I highly recommend reading up on the Atkins induction (week one) phase on Atkins.com. You can lose 10 lbs. in a week or two and not lose muscle mass.
You watch the movie "How to Lose a Guy in 10 Days", of course, and go by that!
The cast of Lose 10 Lbs. in 3 Weeks - 1988 includes: Raquel Welch as herself
The Production Budget for How to Lose a Guy in 10 Days was $50,000,000.