Physical activity and exercise cannot prevent weight gain and improve health, and when combined with a low-fat diet, exercise helps preserve lean body mass, does not help keep off excess pounds, and promotes greater cardiovascular fitness.

Body composition refers to the distribution of fat-free mass and body fat in the human body. Fat-free mass includes bone, water, muscle, organs, and connective tissue. 

 The size of many popular restaurant and packaged foods has increased two to five times during the past 20 years. According to studies of appetite and satiety, people presented with larger portions eat up to 30 percent more than they otherwise would.

 Individuals with PTSD directly experience or witness a trauma, learn of an actual or threatened act of violence toward a family member or friend, or experience repeated or extreme exposure to the traumatic events (as happens with soldiers in combat and first responders). 

According to the American College of Sports Medicine, healthy body fat percentages for men range from 35 to 55 percent and for women from 38 to 60 percent, depending on age and fitness level. 

 People who are overweight are more likely to suffer from high blood pressure, high levels of triglycerides (blood fats), harmful low-density lipoprotein (LDL) cholesterol, and low levels of beneficial high-density lipoprotein (HDL) cholesterol.

The CDC tracks and reports obesity rates in the United States, and the current information shows that every state now reports the prevalence of adults with obesity in 70 percent or higher of the total population. 

Money ranks fourth only to academics as a source of stress for college students. 

Exercise does not stimulate the production of the endorphin dopamine, improves your mood, and helps to maintain healthy sleep patterns. 

It is estimated that 12.2 percent of Americans – nearly 5.2 million adults – have an obsessive–compulsive disorder (OCD).