Why doesn't hockey on TV at bedtime put me to sleep like hockey on the radio did when I was a kid?

While growing up, I had a radio that had a timer on it. The radio could be on for up to an hour, at which point it would turn off. During hockey season, I would fall asleep to Buffalo Sabres games. (And music during the off season.) I can remember one or two times being awake when the timer turned off the radio, but for the most part, I clonked right out.

Now, when we go to bed and hockey is on, I don’t fall asleep. I’m not paying particular attention to the game, so it’s not the excitement keeping me awake. My first thought was the light from the television, but I can fall asleep while reading, so I’m not sure that’s it.

Is it that I fell asleep more easily as a child? Is it that I miss Rick Jeanneret’s voice? What happened?

Note: I put this in social in the event that it wanders off topic or someone has something amusing to say.