It went something like this:
Watched Louis Theroux's Weird Weekends Bodybuilders episode.
Searched YouTube for female bodybuilders; discovered fitness models.
Searched YouTube for female fitness models; discovered Nancy Fuentes;
Mind = Blown; Purchased weights set.

1. I need to strengthen my body or it hurts. Especially my back.
2. I'm not getting any younger and want to enjoy an active and mobile lifestyle when I'm an old bag.
3. According to official standards, I am a healthy weight and BMI for my height and age and even fairly average for a female for body fat percentage. I look nice in my clothes, I'm fairly comfortable in my skin, but I would very much like to be fitter and more toned all over, so looking to improve fitness, and tone up while staying a similar weight through increasing muscle and lowering the body fat %.