It hit me hard when I got it. The worst part was the very high fever and brain fog working together to make me feel even dumber than normal. It didn't help at all that I was also taking prednisone which further compounds this effect for me. It was a very fucking strange couple of weeks, very surreal. Also, it took me a month and a half until I could go for a walk without feeling as sore and tired as if I'd just run a marathon. 0/10 would not recommend.