In our lives, we always want to do something to improve ourselves and those things usually benefit us. So, we start to do a thing but we usually just do it once and then give up while others keep it up until they succeed. The people who failed might complain that they didn't have a good environment to help them and definitely thought that successful people got help from others. In fact, the successful people just overcame all the difficulties they encountered during the process. So, if you want to stay fit, first, you need to know that there are a lot of difficulties waiting for you. They try their best to defeat you and laugh at you when you feel frustrated. You can meet these difficulties in a gym, or while running along a trail. The only thing which can help you to be successful is your strong willpower, not a gym membership/subscription! If you want to be a bodybuilding champion beside staying fit, you need to have both a gym and a strong willpower!