exercise goal #1 - 1st day at the gym

Hello my good DS friends!
I returned to the gym on 3/1.  It was extremely busy there - I guess the new years resolution people haven't left yet.  They will, in the next week or so.  Every machine was practically used.  I hopped on the treadmill and walked for 30 minutes.  10 minutes at 3.2, 5 minutes at 3.4, 5 minutes at 3.6, 5 minutes at 3.4, and finally 5 minutes at 3.2.  Nice an easy workout.  Didn't overdo it (the last time I worked out right before my 1st cancer lumpectomy surgery - I was actually running at 5.5!).  Then went on the eliptical which I just stayed on the 1st level.  The eliptical is kinda hard at the beginning.  I did get really good the last time.  I stayed on the eliptcal for 20 minutes.  I think when I go back tonight, I will try and start on the eliptical because the treadmill seems to be easier. 
I actually felt fine afterwards, which is a good thing.  A little sweat and push can't hurt anyone.  Gotta make my time worthwhile. 
I will be doing 30 minute treadmill and 20 minute eliptical for the next 3 weeks, 3 times a week the same workout.  Have to get my muscles a chance to catch up - too much resistance/distance would tire me out.   Not good for me since its been almost a year since I worked out (I can't count October - I went once and then had to deal with my health issues such as my 2nd benign lumpectomy).   I want to keep going.    then I will continue to increase the time/resistance/distance by 5 minutes, .2 speed on the treadmill every 2 weeks. 
Gotta get ready for the "biggest loser" and the Kaleida Health system 5K training program on Thursdays starting 3/24, which goes until the corporate challenge.  It will be nice to get in shape for the thing so I am not dying after run/walking 3.5 miles.
I cannot believe my weight is 191!  What a slug!!!   Thats what I get for being so sedindary.  Hard to believe that I ran a marathon in 1998, ran several 15K, 10K and close to 50-60 5K races in my area.  I am so dissappointed in myself for getting like this.  Thats gonna change.  Lots of health issues that I had to take care of - tests/procedures and dr appts.  At least its over with, until the end of the summer.