With the climate growing colder and the days growing shorter, people that workout are going to switch to working out indoors rather than outdoors for a better exercise. Gyms offer people with a long range of machines including treadmills, weights, rowing machines, and a warmer environment as compared to the cold and dark set-up outdoors. The gym workout can help you sweat as good as any outdoor workout. However, the indoor workout has a number of drawbacks.