I have gym membership in a local chain of gyms. I usually go to the gym near home, but once in a while because of work, I use the gym in a nearby city.
Sometimes, usually at the end of my workout (when to be honest I'm a little sweaty) gets on a treadmill in the front row of machines. (I prefer the elipitical machines in the second row). She doesn't wear a ring and we have smile at each other in the mirror.
How do I introduce myself without it being awkward? I can't hang around for her to end her work out as I have to get back to work.