"Only in quiet waters things mirror themselves undistorted. Only in a quiet mind is adequate perception of the world."
~ Hans Margolius ~
Any kind of heightened emotional expenditure, whether for pleasure or challenge, takes its toll. We rally through with genuine laughter or nervous tension and at the end are wiped out and need recovery time.
There may be a sense that anything enjoyable should rejuvenate us, and perhaps it does, but the immediate aftermath does seem to require rest and retreat, just like emotional ordeals do. It's a process to integrate whatever has happened and all the ways it may have rocked us, or lifted us, or swung us around.
Life requires that we take time to integrate emotionally energetic experiences.