I'm a 58 yr old female 5' 130 lbs Had a rt. lung removed 14 yrs ago Had a heart attack 3yrs ago had 2 stents put in I quit smoking 18 months ago gained 25 lbs..joined a gym last week... will I be able to lose the wt.only walk at 2.5 mpr or do I need to go faster.. I do use the ab machine and a few other machines..View Thread