While it is known that increasing participation in regular exercise can help control body weight and reduce the risk of multiple comorbidities, it is estimated that only 20.6% of Americans actually meet the current recommendations of 2.5 hours minimum of moderate-intensity aerobic activity or 75 minutes of vigorous-intensity activity/week. The prevalence of overweight and obesity has not declined in the last decade, indicating that current strategies to address the problem in the general population have remained unsuccessful. The annual health care burden attributable to obesity comprises 21% of the US health care expenditures. As much as 68.5-75.3% of all adults 20 years of age or older are overweight or obese. Since 2003, the prevalence of overweight and obesity in the United States has remained high. Low physical activity levels significantly contribute to chronic disease, obesity, and all-cause mortality.
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