Yes you can and it holds very well. I would just lock the door with the key so that someone doesn't open the door.

The part with the handles can be adjusted as desired, from approx. 80 cm to 120. With the part that is attached to the door frame, you can make a loop and take it double, and thus shorten it by half, if this would be necessary due to the size of the person or the room.

You will receive a short, written instruction (two A4 pages) with 12 exercises. However, I would recommend you to study the well over 200 exercise examples on <YouTube> under the search term TRX! It's worth it! Greetings from a TRX trainer