Running properly is just as tiring as a good weight session.

It was like that for me, until it wasn't. I am still weight lifting but my sleep is much worse if I push too much. Sleep issues are simple only until you have them.

The best way to have a good sleep is to stop being anxious and depressed, forget bad things, stay happy, be relaxed at evening, have a good hormonal profile, eat healthy, have a strict circadian discipline, a loving partner and live a nice live in general.

Exercise helps with the relaxed part.