The main aim of specially designed shift-⁠work lighting system is... 1. ...to help people feel alert at night. 2. ...to provide better lightning. 3. ...to prevent heart diseases. 4. ...to stimulate human growth hormones.

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The main aim of specially designed shift-⁠work lighting system is... 1.  ...to help people feel alert at night. 2.  ...to provide better lightning. 3.  ...to prevent heart diseases. 4.  ...to stimulate human growth hormones.

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