There are numerous time when a trader opens a position and price action begins to consolidate. It is impossible to know when price will consolidate and that is the purpose of a time stop. For intraday traders ask yourself this, if price is near your entry point a hour from now, how good can the trade be if anyone can enter at basically the same price you entered in an hour ago.
When you're in a trade and price enters a consolidation (as at midday), you should immediately exit. Does not apply, of course, after a big run, which is just a pause to shakeout weak hands.