When it comes to weight loss, we hear the same old advice over and over again: "Eat well and exercise." Isn't there more to it? Indeed there is! We reveal proven ways to lose weight, keep it off and stay healthy and motivated.

1. Eat nine servings of summer fruits and vegetables daily. Packed with vitamins A, C and E, phytochemicals, minerals, carbs and fiber, produce is healthy, filling, and naturally low in calories and fat. Enjoy it at meals, snacks and before/after exercise to stay full, feel energized and lose weight, says Seattle-based nutritionist Susan Kleiner, R.D., Ph.D.

2. Drink at least eight 8-ounce glasses of water daily to stay hydrated, maintain energy and lose weight -- more if you exercise outdoors or strenuously, says Kleiner. "To build muscle and increase metabolism, you need to burn fat. And you can't build muscle and burn fat if you're not well hydrated," she says. "Drinking plenty of water will help you feel full and keep you energized for exercise."