This is the second time I have done this - obviously a slow learner. Did an intensive ZWIFT two hour workout (mostly tempo and threshold - with a few bumps into anaerobic) finishing at 7 PM after a cool-down.
Had dinner at 8:30 (no alcohol) and collapsed into bed at 10:30. Awakened wide awake in the wee hours, laid in bed for an hour and a half and finally got up and read/watched a movie until 4:30 - 5:00 AM, until I finally was able to sleep. While wide awake, ran a query on the interwebs, “Exercise induced insomnia” and yowza, several articles popped up discussing how intensive exercise can result in high levels of cortisol and
norepinephrine (think adrenaline and its effects) which lasts for hours. The articles went on to state that strenuous prolonged exercise is best done before mid-day to keep those pesky sleep interrupters at bay. Here is one quick article which in a summary of several others: https://www.outsideonline.com/health...ause-insomnia/
Guaranteed I won’t be replicating this a third time.
Who else has experienced his wondrous phenomenon?