Thanks for the welcome, workinglikeadog.
I have osteopenia so I need to do weight-bearing exercise. I figured I might as well jog as walk and get it over with faster! LOL Last March I started and I couldn't even go one mile without stopping to walk. It took 30 minutes to go two miles. But I kept at it, trying to increase the distance I trotted and not worrying about how fast I was going. After I got to the point where I could trot two miles without stopping to walk, I started watching the clock. And when I could do two miles in 25 minutes I decided I wanted to do a 5K fun run, so I started doing three miles on some of the days.
My first 5K was terrible. I did everything wrong. I didn't eat or drink that morning, and I took aspirin on an empty stomach for my morning back pain, and I didn't know to bring sunglasses or a cap because I had been running at dusk, and I started out too fast because I was running with the others at their pace... and it was a hot humid Houston day with temps in the high 80's. I finished in just under 40 minutes and felt sick all day.
When I got home I read online about running a 5K and realized all my mistakes. Two months later I ran another one in 37:50, and two months after that I ran one in 36:37. I don't win anything but I always check the ages of those who beat me (in the 50-59 group) and so far all the faster runners are younger (in their early 50's)

I need to find a 5K that has 5-year age categories instead of 10-year, because I'm 57.
I admit it took a long time before running became something I find pleasure doing, but I like the way I feel after I run, I love the glow my complexion has for the hour after I run, and I like the fact that I have lost almost 20 pounds and not been hungry in the process.
Annie