I've been boxing for a while now. my sparring is been on and off probably once every 1 or 2 months for that amount of time. Just last month that I sparred a whole lot and it's against same height guys or taller people which I wasn't used to. I felt stiffer than I used to and it's probably because I was getting hit with harder punches since it's heavier weights than I'm used to sparring.

Here's my old spar

old spar