Sleep, rest and meditation?

I’m wondering what your meditation practice’s effects are on your sleep. I’m asking this because I have a strange tendency, habit of waking up with very troubled thoughts and memories of past hardships. I’m meditating before and after sleep not only for spiritual goals but also for the purposes of relaxing and letting go of these thoughts. What are you experiences? Do you know if Buddha had anything to say on this matter? I would love to hear what you have to say! Thank you for your kindness, A Buddhist