forever
you can try sit-ups and eat healthly
There are many ways, but I think that Sit-Ups or Curls will help you the most.
not unless you are doing sit-ups at the same time
Usually sit-ups and variations thereof.
sit-ups
The bicycle exercise while lying on your back; also on your back and lying flat and raising your legs slowly off the floor up and down works just as well as sit ups.
press ups crunches pull ups and tricep dips
to have a flat stomach you have to eat lots and lots of fibers, and you have to excercise your stoumach mucles, you can do that with sit ups
a long time. few weeks perhaps
rice cakes, apples, celery/carrots.. um anything healthy that doesn't have much fat or carbs. and its not really what you should eat.. its more of what you should do to exercise: -cruches -pushups -planks -sit-ups -V-sits
Doing sit ups everyday can help with your flabby stomach. It can also help you to build muscle strength and feeling better. Before you start any exercise routine, check with your doctor to make sure it is safe for you.
For flat abs, you can do abdominal exercises. These include: sit-ups, and waist twists, to name a couple of them.