Recharging after a day of work or a day of anything is a highly personal thing. Introverts don't mean shy or quite and extroverts don't mean loud and outgoing. Introverts do tend to draw energy from being alone with their thoughts. Extroverts tend to draw energy from being around people or for shorter time periods of being alone with their thoughts.
One of the biggest adjustments after having a kid was learning that I needed that alone time that was now taken, without realizing I had carved it out previously. It wasn't just the lack of sleep that I was adjusting to, it was less time being by myself. There was less recharging going on.
Part of the recovery process from a days work or a days training is realizing how you recharge your batteries per say. Introvert or Extrovert, your recharge will be very different. Discovering simple ways to recharge will keep you and those around you, happier and healthier.