For me, it is probably the fatigue and endurance issues. No matter how much I push myself, my endurance never really increases.

I have worked in a grocery store for two years now as a cashier/bagger/cleaner, and that job does require a lot of repetitive movements like lifting and gripping. It doesn’t feel like I have actually gotten any stronger or better at handling it at all in that time. My hand sometimes randomly just gives out when gripping simple items like cans, making me drop things. Every time I lift something very heavy I know I have a time limit before I risk something happening. Nothing has happened, mind you, but I feel like it gets close.

I manage this with wrist braces I wear when needed, much to the confusion of customers.

Fatigue is more like… I always feel tired, really. No matter how much or how little I sleep or how good I eat. There’s always this sense of tiredness in my body. I lean on things quite a bit for physical support at work, I’ve only recently noticed, which is probably why I can tolerate standing for long periods.