Do you have a medical condition that makes physical work difficult? (truly being genuine here). I mean, Im old and very overweight and super out of shape but I still do my job pretty easily.
Nurses make a decent salary. If you are talking inpatient hospital nurse, they typically work 3 twelve hour shifts a week, every other or every third weekend and rotating holidays. I love having weekdays off. I like batching my work days together to have longer stretches off without having to use vacation time.
If you dont care which major, perhaps dont be a nurse. If you only have interest in peds those jobs are fewer than adult nursing jobs for obvious reasons (theres more sick old people than young people).