Do as many as you can, you will feel it in your stomach if you are working hard or not. It doesn't really matter how many you do, its if you can maintain it everyday, weeks and months. Doing sit ups isn't the only way to get slim, you can run, bike, gym, eat healthy.
15
500
you will lose on average 150 calories doing 230 sit ups.
about a million
Sit-ups have to be done briskly in order to burn a significant amount of calories. Fifty sit-ups on average would only burn about 30 calories.
Sit ups do not burn stomach fat. Sit ups build and tone stomach muscles.
600
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.
Twice a day, do sit-ups for three minutes. Overtime, you'll get better. I can do about 65 sit-ups per minute.
sit-ups raise your heart beat more
Well I just started doing 30 or so sit ups a day so yeah.
In a 16 ounce bottle of soda, there are about 184 calories. The rate at which the sit-ups are performed will determine the amount of calories burned. If 100 sit-ups in around 10 minutes, 57 calories. It would take around 300 sit-ups in 30 minutes.