19. The U.S. Preventive Services Task Force (USPSTF) found fair to good evidence that intensive counseling about diet and/or exercise, with behavioral interventions, can help obese patients lose weight. Which of the following statements is correct?

• The USPSTF states that typical weight loss with the recommended strategies is about 3–5 kg.
• The Physical Activity Guidelines for Americans recommends 300 minutes of moderate-intensity aerobic activity per week.
• To meet current exercise recommendations, patients must do 30 consecutive minutes of moderate exercise 7 days per week.
• As a general rule, obese patients should be advised to reduce their caloric intake by 100 calories per day in order to lose 1 to 2 pounds per week.