Related Clues:

• Flexes
• Doesn't stay the same
• Barre exercises
• Adjusts to conform
• Retrofits, perhaps
• Makes ready
• River features
• Switchback features
• Adjusts to change
• Surfacing diver's concern, with "the"
• Gives a little
• Tweaks
• Decompression disorder
• Diving woe
• Relaxes, as rules