Sister Wind Moon - Esbat of August

I've been tracking my mood, and sleep around the esbats the last couple of months.
I get moody, depressed, tired, difficulty sleeping. Then the night before the full moon
I require not much of any sleep at all. And am so energized that day...

An esbat is a time of high energy and power. Maybe that is why I feel energized w/out much sleep. I thought that it meant that the moon is most powerful though...