They are not to be used reflexively. Electric shock, however, increased hunger two-fold. It also appears that water-deprivation seems to lower hunger. Big words and long sentences. Most readers are busy.
Many readers are lazy.
Many readers just scan. Help these readers by using short sentences and plain words. Whenever a big word tempts you, look hard for a plain word. Whenever a long sentence tempts you, find a way to break it up. The big word and the long sentence must increase accuracy a lot to make up for impeding reading.