Rebounding seems to be popular for lymph detox. I sleep poorly and often wake feeling bad - hard to explain. Caffeine will often clear things for me.
Here’s an article on other things to try:https://www.radiantrealitynutrition.com/2018/08/27/5-ways-to-detox-your-brain-for-radiant-health-hacking-your-glymphatic-system/
One thing I haven’t tried is cranial sacral therapy. I’m going to look into it.