Even over the course of the week, it would be hard for someone to meet the recommended intake of foods like fruits and vegetables. According to data collected by the Centers for Disease Control, only about 12 percent of Americans eat enough vegetables per day and only nine percent eat enough fruit. Only 1 in 10 Americans consumes enough fruits and vegetables per day. On an intermittent fasting program, your intake would have to be substantially higher on feasting days to compensate for days when eating is off-limits.