Why does this happen?

I actually feel pretty good. It's relatively easy when I lie down, so I want to do various things. But just getting up to make and eat a simple meal... That alone makes it so hard to breathe that I can't even keep my upper body up unless I push myself. Is this a curse!? 👊💢 I can almost hear a mischievous god laughing. There's so much I want to do, so much I want to do... Damn it all‼️😫