As a kid, I liked books more than sports, but was by no means sedentary. Playing outside was a big part of my life. Swimming, basketball, frisbee, mowing lawns, stuff you do! As an adult, I don't consider myself a 'fitness machine.' I don't have 6-pack abs. One thing I've learned from this journey is that I do not enjoy the life of someone who has 6-pack abs.
I'm forty-something years old. I've had healthier phases and not-so-healthy phases. I've gained and lost weight. I've dabbled in martial arts, rock climbing, and yoga, and learned a lot about movement and the body. I was vegan for quite a few years (not currently), and was motivated to learn a lot about nutrition so I didn't become malnourished. I've been injured, and done enough time in physical therapy to appreciate the body's capacity for life-changing injury and recovery.
I didn't truly get into 'fitness' until the invincibility of youth had faded. I had a family by then and couldn't afford an injury. So I took it slowly and did my research. It became a journey, with ups and downs, side trips and dead ends, culminating in my eventual decision to shift careers and combine my knowledge and passion from my hobby (fitness) with my skills acquired from my job (teaching ESL in Korea). Being a personal trainer has been the most satisfying career I could imagine.