*Note - I did not invent this. I am just reviving it.
Sometimes when I get in bed, my body feels tired but my eyes aren’t. It feels like I can just keep them open. What I do is I move my eyes back and forth like your watching a fast ping pong game. Do this side to side for about 10 minutes and then you do the same but you go up and down. You can do this with your eyes open or eyes closed I don’t think it really matters. After doing this then you should feel more tired then you were before.