Poppy - Google box breathing and you will find several videos explaining it. I feel they are helpful. I am going to make an appointment with an acupuncturist next week. Hope it helps with my breathlessness, insomnia and lightheadedness. I agree with you - after reading all these posts I also feel like I know more about long covid than my docs. They all say they don’t really know if all my problems are due to LC as there is not enough data on it yet. Very frustrating!