Having a flat belly diet has really concern me a lot… as different people presented different views about the flat belly and the types of exercises that can be performed to get the flat belly and enjoy the shape of body we want and dreamed to have!
the majority of the exercise experts advise us to follow either any of the exercises recommended below; as the below exercises help very much in getting a flat belly:

In terms of walking; walking exercise is the only one that has widely been approved as an aid that helps in having a flat belly, removing the fats, and accomplishing the abs…this exercise is suitable for all ages… it can perfectly be performed without having any side effects…

In terms of crunches; it is basically suitable for building abs, but it is not suitable for all ages… it can be performed on the floor, by bending your knees at 45 degrees with both feet on the floor, then place your right hand over your left knee and vice versa…

In regard to the bicycle; you can perform this exercise by lying on the floor, bring your knees to about 45 degrees, and slowly go through a bicycle pedaling, touching your left elbow with your right knee and vice versa…