Also interesting is this: "researchers were able to successfully modulate cervical lymphatics using phenylephrine (which activates α1-adrenergic receptors, causing smooth-muscle contraction)"
Phenylephrine is the so-called decongestant that has finally been called out for being a fraud in oral medications (and I can tell you from painful, painful experience that it is indeed a fraud). I was surprised to see that it allegedly accomplishes something in this particular application.
https://www.cnbc.com/2023/09/12/decongestant-phenylephrine-i...
Or you could drink beetroot juice a few times per week.
Who knows if this will work though. I have my suspicions that inversions are very good for brain health and blood flow and I sleep better if I do yoga before bed.
I quite enjoy Sivananda yoga it’s fairly easy, reminds me of a beautiful time in their Ashram outside Madurai and you can see real progress because the basic routine is always the same.
One visit in laryngologist got me thinking; he said: "It's simple. Wet wounds heal fast and well. Dry ones can even not heal at all. You have dry lung mucosa and that's why you get infected easily: it's like an open wound".
He was right, after keeping > 50% humidity around myself I got better. That got me thinking of experimenting more.
What if, I had a running nose, because the body wanted to make my lungs less dry? So I forced myself to breath through nose for two weeks and again, got better. Still doing it, years after.