Parents of little ones, DAE feel exhausted most of the day, but as soon as the kids go to sleep, catch an intense second wind?

I have a 4 and 2 year old. Most of the day I just want to collapse, but without fail, every night, as soon as they are in bed, I get this sudden burst of energy and it keeps me awake for hours. Does this happen to anyone else? How can I stop it?! via /r/Parenting http://ift.tt/2d4uKL8