Burst of energy followed by a crash

Had a real burst of energy this week after making the decision to quit teaching. Felt like a new man and was able to do things I couldnt normally do. 
Now after having two occasions of socialising in two days I feel utterely burned out and crashing, like I cant do anything but sit in my pyjamas.
Does anyone else identify with this:?

Parents
  • I'm the same.

    Just had palpitations this evening, and called the out-of-hours Surgery.

  • What did they say? Did you manage to get anywhere with them? I get irregular heartbeat sometimes that feels like my heart is flip-flopping about and takes my breath away, I have 'ectopic beat' or something they told me??

Reply
  • What did they say? Did you manage to get anywhere with them? I get irregular heartbeat sometimes that feels like my heart is flip-flopping about and takes my breath away, I have 'ectopic beat' or something they told me??

Children