From tumbler to triathlete?

For the last few years, my exercise regiment has been essentially nonexistent. During college, this was not a big deal as I was consistently hiking all over campus to classes several days a week. Since I have been married, life has become much more sedentary. For one hour, one day a week, I spend time at a gym learning the basics of tumbling, gymnastics, and trampoline. I have fun but it falls far short of any recommended minimum of exercise in a person's life. So, the next logical step is to consider a triathlon! Actually, that's probably not logical. A 5k, 10k, half marathon or any other running event has been a consideration for quite a while. I thought it sounded easy enough to train for and be rewarding in the end to know what I had accomplished. I'm not saying a running event is easy to do but it's something that requires minimal equipment and can be done just about anywhere. Unfortunately, my interest just never got off the ground as it sounded boring. A couple of months ago, I learned that a friend was going to attempt a triathlon. This sparked my interest because instead of just running, you swim, bike, AND run. After much research, hemming, hawing, waiting for our neighborhood pool to open, and mental preparation, I am now two weeks into a sprint distance triathlon training program for beginners recommended to me and found at: Tri-Newbies Online. Is this the best choice for a beginner? I have no idea but at least I'm no longer sitting at home nearly as much. I work with a woman that was a personal trainer in a prior career so I did have her look at the program and she thought the details and plan looked good and thorough. Also, if I have questions, it's great that I have someone to ask as I am not very familiar with the fitness world. The point of me announcing all of this here is that I've read when you announce your plan to the world, well, friends and family at least, you will feel like you're being held more accountable for your actions. I probably should have mentioned I was going to do this earlier but wanted to make sure I was going to really go for it before having to feel guilty for not actually following through with my plan. So, now when it gets difficult, my dear blog readers, it will be your responsibility to encourage me. ;-) My plan is to post updates of how I'm doing. Most updates will be tedious and boring but it will also be a way for me to keep track of what I have done. Oh, the goal is to just complete a triathlon regardless of final placement. I have not actually signed up for one but I am eyeing a couple sometime in August.