I had covid back in January, and my lungs have been screwed ever since. At the time I thought it was asthma, then bronchitis, then maybe COPD, but it's all similar, and I never got significantly better, I no longer can breathe all the way out. When I was blood testing SN and thought I had asthma after Covid, I couldn't get enough blood from the pinprick, so I put the SN on the blood on my skin on my arm. 5-10 minutes later, I felt warmth go up my arm and down into my chest, and I started having tightness in my chest and somewhat restricted breathing, like a mild asthma attack. This is why I haven't yet done the method, because I don't want to feel like I'm suffocating. Covid was bad enough, there were several nights I felt like I was breathing through a straw.