It is good to study at night because your mind sorts out, incorporates, and establishes the things you think of most just before bed and therefore if it is Worship of G-d and his Love then that will become the dominate thoughts in your life. it is proveable by science today via neuro genesis and plasiticity of physiological foundations and expressions of thought. Thanks praise glory to G-d.Adam Mary Windsor Studying Torah The Ultimate merger Between the Finite and the Infinite