First time jumping rope barefoot in a while… Calves tightness is crazy!!

NOT SEEKING MEDICAL ADVICE

I returned to MT this last week after about a 6 month hiatus. The class brings with a jump rope warm up for 2 2:30 minute rounds. I felt fine during it and the rest of class. But the next day ooooo man, my calves and foot have been aching and have been so sore. Has anybody else experienced this same thing? Is it just a technique thing with jumping rope? Or am I just needing to build back up strength