Well, nothing beats the fun of a nice bull run.
The very first observation is that there was a palpable spike in bullishness last week, while the markets generally had minimal net gain by the Friday's close. This by itself, even without further looking at the charts makes a good case for correction to happen next week.
The charts tell a similar message. On most of them you could see a push towards resistance practically across the board.
Just few relevant charts below before further dissecting this bull run.
Anything much more than 3% would bring the possibility of failed 5 as on this count.
Bull runs can be quite unpredictable, and we can just keep going up.