I believe about 10' x 14'. However, room size really depends upon use type of equip being used.
love glass walls for exercise room
Interesting workout / kids play area
Kids can play while adults work out
The parents can work out and watch the kid play.
exercise room and the living room
enough room for a dedicated exercise room. Even if you don't have the extra room, setting up exercise equipment near a window with a view will make the whole enterprise more enjoyable.
include room for a home office, a gym, a bar/lounge, a guest bedroom, and a large play area. The design was more about taking away elements than adding them. A large glazed wall with sliding glass doors is located to the right of the home gym. In the initial construction, this was a large foundation wall