am I there yet?

So, my new assignment was to work out at least 12 hours this week. Between Sunday through Wednesday of this week, I worked out 8.5 hours. That averages out to about two hours per day. I took today off. I just couldn't go another day. There are three days left and I need to arrange at least four more hours of exercise. Then, I start over for the following week. Who says it gets easier? The best thing about having longer work outs is I know that my heart is stronger. Other parts of my body do not feel that way. My next weigh in is not until February 6th and I am already worried.