Does anyone else find SPD is worse when AF comes around?

I've been cooking for my brothers business for about a week now & have been handling it fine. Today though, I feel like I'm broken
I have been on my feet for 2 or 3 hours straight. Usually about 4 hours max a day. But its been fine til today. & AF showed up today, so I think thats why.

Any volunteers for a back rub?