I divide up day session into three, 1st 30 minutes, 4.25 hours and into the close. Each have there own set of signals and money management rules.
Lunch is actually very consistent for me but I am more of a chop trader, so on days where ES is trending hard like today, I stand aside, but once it goes sideways, tons of 1.00pt winners.
The afternoon session is generally the same most of the time, time to hit the stops and run the other way, big whip.
So if you a trend trader, skip lunch, if ya like small profits and chop, lunch the way to go.