A note of caution...

If you're using resitance bands with an over the door adapter to do "pull ups" and "chin ups" DO make sure the door is bolted shut before you grab the handles and sit down. If you make the mistake of merely closing the door, you too can have the giant rubber bands come flying at your face at the approximate speed of 2000 miles per hour and give you a lovely swollen cheek with a very colorful stripe across it.

Consider yourself warned! UGH!