Running and exercises that include cardio is usually not very popular among weight lifters and most people in general. In most cases, people find it unnecessary, because they feel just fine and don't need to lose weight. However, cardio does not just help burn fat, but also increases your general energy level, keeps your body sharp and fit, strengthens your bones and joints, and reduces the risk of many diseases.
The best part is that you don't have to run 10 miles or an hour at the gym. Just 20 minutes is enough if you keep up a high intensity all the way throughout the workout. That also means that you are going to sweat! Swimming is another great exercise, because it makes all your bones, muscles, and joints work together in your entire body, and gives your body a break from higher-impact activities. Swimming builds longer leaner muscles and targets different smaller muscles that you don't usually hit in the gym.
Additionally, it doesn't only boost cardiovascular capacity while increasing muscle strength, but also your metabolism to keep calories burning a long time after. Moreover, there are many ways to stay active which will help you feel more optimistic, focused, and happy in your life. It only needs to take a few minutes.