Congratulations! You'll be amazed at how quickly you'll progress. When I first got back on a bike, I actually wobbled down the block and fell off. I live in pretty flat Illinois, so I didn't have hill challenges, but 3/4 mile down the road that day I was going 7mph and wheezing so bad I thought I wouldn't make it back home. Gee, I haven't thought about that for a long time! Definitely not one of my glory moments. Isn't it so much fun to ride? No matter what your size, you feel free as a bird!