I find if I work out consistently I am always getting great sleep and getting really tired in the evening, but if I don't I might not ever feel tired then I look up and it's 3am. I never made the connection between heavy exercise and sleep before, but it seems obvious in hindsight. Got to do what we are built to do not what modern life insists we do.

I think being active, especially evenings, is helpful. When in Santa Cruz, my wife ensures via threat (joking) that I attend her evening pilates classes. It does help with sleep.