Possible Clues:

• Riding a bike, e.g., for most
• Deeply ingrained habit
• What environmentalists note we don't have? It's only to be expected
• The sort of close encounters to be had in the cinema may follow this acquired habit?
• Support wildlife, etc - it's become instinctive
• Something deeply engrained
• Habit about to be exhumed from unconsecrated ground
• Back to the wild - it's become a habit
• Person helping with kind support that's instinctive behaviour
• One's automatic response is to back scientific publication