On one hand I'm in good shape. I swim. I run--or perhaps purists would call it jogging, but I work up a sweat. I spend an hour to an hour and a half pretty much every day doing some kind of vigorous exercise. (Let's ignore for the moment all the hours spent writing butt in chair, fingers on keyboard. Good for books; not so good for butt.)
I don't even need to lose weight.
BUT I am in serious need of strength training. My goal is to be able to manage a 50 pound suitcase with, if not ease, then at least not a hernia. When I roll up to the counter to check my bag, I'd like to be able to get the damn thing on the scale without engaging in a serious wrestling match. Is that too much to ask?
And my doctor has become a bit of a pain at my annual physical. I'm at that age where bone density is a frequent topic. He tells me I need to lift weights.
I like to swim. I like to run. I like to move. I do not like to lift weights. Truthfully, I don't really know what to do and how to do it to get stronger without hurting myself.
Ergo, the trainer.
Gee, maybe I'll even be able to do a real push up some day!