That would have to be through water retention then, which can be caused by certain medications and illnesses. Not really something to aim for.
From research and personal experience, I have learned that it is not possible to gain 10 pounds in one week.
Is it possible that a fetus in utero can gain two and one half pounds in one week during your 38th week?
eat poo for a week
Have a limb amputated. No really, you didn't gain 70 pounds in one week, how can you expect to lose it in one week? It would be aggressive to try and lose 70 pounds in 6 months. That would be 3 pounds a week and that is very hard!
possibly cancer
My doctor said about one ounce a day.
Could be because you dont excercise enough and you ate heaps of junk but im a personal instructor and you will gain or lose around your normal weight
If you want pounds fast, drink muscle milk and don't work out. It's got like 1,000 calories every cup.
That's impossible to do in one week.
Five to ten weeks. 500 cal per day equates to one or two pounds per week. This is a safe amount to lose/gain.
No.
Unless you get gastric bypass you can't lose that much in one week. Even if you starve yourself.