Stompy:
I really scares me when someone says they lost "45 pounds in two months." You apparently are/were a very unusual situation. What was your weight when you began this program? Fast weight loss like this usually results in rebound gains later. Rome was one of the few places not built in a day but destroyed in a day.
I really think you would benefit from understanding the biological fundamentals behind training your body to process fat vs. sugar. What worked for you may be different for others. It is documented that you can train your body to be more effective. And it is also a fact that, when working at high entisity levels, your body will look to protein for fuel when it runs out of sugar to process and doesn't know how to effectively process stored fat.
Heck, there are guys out there that can run back-to-back marathons, and it's all genetics - their body mechanics and how they process fuel.
You really have no idea how much muscle you lost and where you might be now had you trained smarter. Plus, age has a huge role in the process.
So my point is to teach your body to process fat so morning high intensity cardio is really effective. Here are a few interesting links:
http://www.drlenkravitz.com/Articles...threshold.html
http://www.drlenkravitz.com/Articles...rformance.html
http://www.drlenkravitz.com/Articles/genderdiffer.html
Why not work out smarter if you can and enjoy even better benefits?