Your best bet is to do the situp properly without cheating or trying to get away with sloppy situps. The heavier you are the more calories you should burn with situps but it is very difficult to tell beyond that an exact number.
you will lose on average 150 calories doing 230 sit ups.
Depending on your weight, an average 200 pound man has to do about 752 sit ups to lose a pound.
The number of sit-ups that you need to do to lose two inches depends on many factors. The first is how much you weigh when you begin. The second is how long it takes to do those sit-ups. The faster you do them, the more calories you burn. Doing 100 sit-ups in 10 minutes will burn approximately 57 calories.
proabably lose aboutt 1.5 pounds
5X20
lose some weight :(
by excersing like sit ups push ups 25% or belly ups
you should do 3000... 1000 is one pound..
On the ab rocket you should do the amount of sit ups you need to until you reach you reach your limit ( your stomach starts cramping/ hurting)
doing sit ups will tone up your stomach... if you want to lose the weight try running and things like that... Hope this helped
around 12...
Sit ups or preferably squats