Jim said people can healthily lose half a pound to two pounds a week. In a month, that could add up to four to eight pounds lost. Since one pound of fat equals 3,500 calories, to lose one pound a week, you would have to burn approximately 500 extra calories a day. This can be achieved through eating in a healthy calorie deficit or working out to burn extra calories (or a combination of both). Other lifestyle factors also play a role. Getting enough sleep will ensure your body recovers well and that you'll be energized for your workouts the next day. And too much stress increases the stress hormone cortisol, which can increase your cravings for caloric refined carbs and comfort food, which will prevent you from losing weight (especially in your belly). Make sure, in addition to eating in a calorie deficit, that you're also getting at least seven hours of sleep a night and managing your stress.
Fiber is found in beans, nuts, seeds, fruits, veggies, and whole grains and foods rich in fiber tend to lend themselves to weight loss. At the moment, just 10 percentof Americans are hitting fiber targets of around 25 grams per day. Studies that track what people eat over time suggest that there’s a connection between weight and fiber intake, with higher fiber intakes linked to lower body weights (the reverse is true, too). One review of 12 studies found that supplementing the diet with more soluble fiber helped people slim down. Another year-long study found that people who followed the simple suggestion to eat 30 grams of fiber each day lost about 5 pounds.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.