No, not really.
Ignoring surgery, that would require eating nearly nothing, yet working out hard pretty much the whole day.
You are not supposed to lose 23 pounds in one week. It is simply not possible.
You cannot lose 100 pounds in one week by any natural means. It is simply not possible.
You cannot lose 35 pounds of body fat in one week. It is not possible by any natural means.
Your sister cannot lose 30 pounds in one week. Other than surgical intervention, it is not possible.
definitely, if you don't eat anything and exerise
If you mean 85 pounds of body weight, it is not possible to lose that amount in one week.
It is simply not possible to lose 100 pounds in one day. It would be possible to lose it in one year, however.
Possible, but not recommended. General weight loss recommendations that are doable w/o resorting to extreme diets is 2-4 lbs/week. As
Unless you get gastric bypass you can't lose that much in one week. Even if you starve yourself.
It is not possible to lose 50 pounds in one day. Even women who have just given birth, do not lose that much weight on one day. A healthy weight loss is one to two pounds per week.
That is not possible to do safely. One to two pounds a week is a realistic goal. 10 lbs a week is NOT.
Diet.