Finally the Advanced Lightning Model * IMPORTANT: it cannot be switched on without Atmosferic Shaders*.
As you can see the the light is being bounced off things, which create shines. Algorithms works with Materials (Basic texture + Shine texture)
Because objects can have more than one texturing layer it is possible to make highly realistic one. Like in this example the weights after a lot of polishing.

Advanced Lightnig model also enables light projectors (You can set an object to be light source and add a texture it will radiate on the wall/floor/avatar, etc.)

There are plenty of tutorials how to do that - you learn something new, but also having fun - as you get results almost immediately.