Yeah, I raised my eyebrows at that one too. I'm pretty sure I had the first one of my life recently and still am not certain what caused it. I suddenly was ge

Yeah, I raised my eyebrows at that one too. I'm pretty sure I had the first one of my life recently and still am not certain what caused it. I suddenly was getting massively winded with the simplest physical activity. The only reason I didn't think it was a breathing or heart problem was that my S.O. recognized the symptoms and theorized it was anxiety. About 15 minutes after taking a beta blocker those symptoms disappeared, proving the theory correct. No idea how to re-create it and no desire to, it was kinda scary.