Gyms and fitness clubs are booming in the U.S.. According to Prweb.com, “Gym membership numbers have increased considerably over the past 10 years, rising from 36.3 million in 2002 to more than 43.6 million by 2012.” Every city has several gym and fitness clubs that citizens could join in; even a small town, such as Port Lavaca where 12,248 people live, has a well-equipped gym and fitness club with 500 members. Why are so many people working out in a gym? People may choose to work out in a gym for different reasons, but all of these factors bring them positive effects: they burn fats, build muscles, and improve cardiovascular health. In addition, maintaining an exercise habit could be more beneficial than these effects and improve your life. Everyone has their own unique reasons for going to a gym. Based on CBS news, in the U.S 27% of households have one person. People think the gym is a great place to socialize and get involved in community. Gym provides group exercise classes and a way to work out with other people. Joining a gym is also a good way to save money. Gyms offer series and diverse types of equipment for different weights and functions. No matter what exercises people tend to do, they can always get appropriate equipment, like treadmills, pull-up bars or flexion machines. People seek a healthier lifestyle to reduce their risk of heart attack and high cholesterol. A report published on rac.org showed 70% of U.S. adults are overweight and more than one-third of U.S. adults are obese. Nowadays, more people face this serious problem and want to make a change. For some people, they just enjoy sweating and exercising with muscle fatigue. Doing exercise regularly could make many positive changes in the body. For many exercisers, they could get physical health benefits of exercises and associate with outcomes with healthier life. One of the benefits is getting control of or losing body weight. When you do physical activity, y