Studies have shown that reading has effect on mental health. It says if a person read regularly it makes the person happy and reduce the stress of daily life.
By reading a book you allow yourself to enter into a literary world which distract you from your day to day boring routine. You do not have to ready aggressively a huge amount daily. Just make it regular. Even one or two page will work.
There is more treasure in books than in all the pirate's loot on Treasure Island. – Walt Disney
Reading also improves your ability to keep remembering things. It makes your brain active. Daily exercise of brain muscle makes it stronger and healthier.