Doing crunches won't make you bloated, it will help burn belly fat and gain abs. Eating junk food will make you bloated and fat.
Yes, doing crunches will help with the overall conditioning of your body core - which is part of the driving force needed by your legs,
Doing crunches does not make you skinny. Eating less calories than you burn and being active (cardio exercise) will make you skinny.
You need to hold your stomach in when doing crunches. If you push your stomach out the muscle will shape that way.
you cant. but you can get abs by doing bicycle crunches and regular crunches.
yes they can.
20 calories per 100 crunches, if you're doing them correctly.
By doing exercise and crunches
No, you will tone that specific area but you can not 'spot' lose weight by simly doing cruches. By doing crunches you may lose weight from any part of your body.
Yes, I also feel bloated when I'm doing a seat up exercise. But they say it is normal, especially when you make it as your regular exercise. It is actually perfect workout in loosing beer belly or excess belly fats.
doing crunches makes muscle on top of fat and after that its almost impossible to lose that fat!