Reply #3: You're going to hate me.

[flvegan]

First, let me repost what you said in the opening post:
Did a total of 8 miles on the treadmills
Did a total of 22 miles on the exercise bikes
Did the entire circuit of weights twice
Walked a mile in the park and did my usual two miles a night x4 days at my weekday job (my regular nightly rounds)

With the math, you did roughly 2 hours on the treadmill. You also did a little over an hour on the bike. I don't know exactly how that's broken up over that time span. It does equate to 1/2 hour per day of cardio over the 6 or 7 days. Your intensity level seems very good. Those are very good speeds.

What is your metabolism like? You say you want to lose 70-90 pounds. Does that put you in Kate Moss area, or is that a healthy goal?

Your snacking may be an issue, but you still should have lost something. Are you using the same scale each time, at roughly the same time of day?

If your body went immediately into "fight or flight" you may be what I call a hardloser, which is an endomorph to the 3rd power. That means you really need to shock your body into letting the weight go. You can do it, though. It's sort of like jump starting a car...