Mkirchie ---I had that happen during a softball swing once....last time I played slow pitch softball.
My first commandment of bowling is, thou shalt not fall down OR hurt yourself.
I take it real easy during practice, just trying to get everything i've broken or had surgery on during my "youth" to pop, stretch, loosen, quit hurting!
I'm pretty determined to bowl, but the next day I always feel like I ran a marathon.
Bowling back to back days/nights is hard. I only do it for nationals.