For those that like to keep up with the latest news or the soaps, a room with a television would be appropriate. If your home gym design is inviting, you will be more likely to use it more often.
If you decide that working out at home makes the most sense, the first consideration will be the location when it comes time to design your home gym. You may choose the basement.
But if it is dark and damp, this is not an inspiring environment. Another consideration is an extra bedroom or part of a family room or den. You want an inviting location that is well ventilated and provides sufficient light.