I play hockey frequently and have the same issue. When we go on vacation, I sleep worse, need to sleep later and longer to feel better. I know that even moderate cardio regulates circadian rhythm and helps with body temperature regulation. Your body's temperature increases during exercise, when you stop and your body temp comes back down, neurologically it tells the body you're now ready for sleep. Exercise also helps regulate melatonin production which affects your sleeping cycles.

When I play in really hard, grueling sessions, taking CBD also helps reduce the inflammation in my body and helps me sleep deeper. I also stretch for at least 30-40 mins when I get done which also helps.

So it makes sense, once you stop or change your body's cycle, it can affect a lot of other areas of your day-to-day schedule.

I will add creatine as a supplement to improve sleep in the face of hard exercise.