I did it! I went to the gym by myself tonight and had a great work out. My friend Jody had shown me the ropes when we went on Tuesday so I had a good idea of what to do. Tonight I used the elliptical, the treadmill and a bike. My legs won't be happy with me tomorrow.
It felt great to run again, even just for short spurts. I found that I could push myself to run faster then I do outside. I'm sure it's the fear of flying off the end of the machine and ending up as a viral meme that inspired me to keep up with the pace!
I'm not convinced that I want to commit to a membership. I really do prefer to just run outside, so if I could pick up a partial membership for a couple of months it would be the best of both worlds.