Final answer:
The majority of successful members in the US National Weight Control Registry engage in high levels of physical activity, which equates to about one hour per day, but the exact percentage for this statistic is not provided in the reference material. They follow the practices consistent with weight management and health guidelines.
Step-by-step explanation:
The question pertains to the percentage of individuals in the US National Weight Control Registry who exercise for at least one hour each day. According to information related to the National Weight Control Registry, the majority of its successful members, who have maintained a significant weight loss, report doing a high level of physical activity which approximates to about one hour per day. Weight management practices such as reducing food intake and increasing physical activity, including interventions like walking, have been prevalent among Americans looking to lose weight. These practices are reflective of the guidelines provided by the Department of Health and Human Services, endorsing at least 150 minutes of moderate-intensity aerobic activity a week, which could equate to approximately 21 minutes a day, substantially less than the one hour per day exercised by registry members.