Houses have different designs. Some have their own basement where they also put their trainers and exercise machines. It is more convenient for them to exercise downstairs where they can concentrate on their training. It also does not clutter the rooms upstairs where guests usually stay. Some even have their own entertainment system in the basement where they can watch their movies without annoying the others upstairs. The only problem is if you are waiting for a call on your cell and there is no extension phone downstairs. The signal may not be clear enough or you may not receive the call. If this is the case, you may need a cell phone booster which would help in increasing or amplifying the signal in the basement. If your gym is located in a building or in the mall, they may also be using a signal booster in there. The cell phone signal in some of the malls are not that powerful. The booster would assure us that we would not miss any of our important calls.