Reading is Important

Most of people are busy with their lives and they don't have much time to read a books., Mostly people love to watching movies, watching television or playing on a computer, even though reading is not only furthering increases knowledge but also useful for health improves mental health. People who love to read will have better more brain concentration and focus. The Readers will have the ability of to give their full attention to things. and practical in life. ItReading also develops the objectivity and decision-making skills. Thus, reading helps sharpen skills that are practical in life. 

Studies have shown that brain exercises such as reading books or magazines, playing crossword puzzles, sudoku, and others could can delay or prevent memory loss. According to the researchers, this activity stimulates brain cells to connect and grow.

Hello Herma.  Other comments: You can also say "read a book" at the end of the first sentence.  I just thought is sounded better to refer to reading books generally.  Your third sentence "Even though..." is not really a sentence.  It is a dependent clause.  So, I revised it to connect to the previous sentence.  You could also write a stand-alone sentence, such as: "Reading not only improves knowledge, it is also healthy."  I took some liberties in making changes, to make the paragraph sound a little better to me.  However, there are other approaches that are just as appropriate.  I hope that helps. Let me know if you have any questions.