Most people when they start working out they only focus on one thing. For example, some people might be heavy weights and that’s it. Some other people might be strictly cardio, others might be a small combination of both, but people usually choose one or the other. And if you want to be a great athlete you always have to mix two or three different types of exercise which includes cardio, weight training, and a lot more different types of exercises which will increase your stamina, resistance and flexibility. And because of that you always need to be ready to do any type of exercise that you can do. This also includes exercising at home and that’s why the use of treadmills and exercise bikes is such a benefit to most people because it will encourage you to do your cardio at any time, thus increasing your overall athletic ability.