If it is at the end of a hallway, you should be able to perform about 90% of the 300+ app exercises with the exception of more advanced exercises requiring significant lateral movement such as Jumping Skaters and Sliding Curtsy Lunges or those where your arms are fully stretched out if your arm span is wider than the hallway.If it is in the middle of a narrow hallway, it will really limit the total amount of exercises you can do. You can still perform assisted squats attaching by the handles directly to The DoorGym as well as most physical therapy exercises.