Entering and Exiting Tub   Step 1 To enter the bathtub, sit down in the doorway, with your back to the bathtub.   Step 2 Slide back as if you were getting into bed. Your legs will slide in without any strain and very little bending.   Step 3 Use the handy grab bars to help slide backwards.     Step 3 Slide the door shut — it seals by itself. You are now ready to fill the tub and enjoy.