What should I do about stretch marks?

What type of Exercise Bike is this.. and what would it do for me? +stretch marks?

• The community I live in has a small gym, I am interested in this exact bike. The peddles are the same and the back part 'chair' is the same as the one in my gym. http://www.sportsauthority.com/product/index.jsp?productId=3166641&cp=710956.863229.1382081&parentPage=family What would this bike do for my legs? ..I would like really to just work on building below my knee area because I think I need more calves. and I have started walking 2.6 miles every morning of this month, I have some hours of free time in the day, and I was wondering if adding this bike to my exercise would be a good idea for me, to use this bike for 40-60 minutes a day? I am 20 years old. I need to lose 30 pounds. Would this bike cause me to get stretch marks? Or worsen mine? ..I have them on my upper outer thighs and on my hips...and I feel this bike working these areas my stretch marks are in.... The main reason why I would exercise is for building my lower legs up (chicken legs) calorie burning and for my heart health... but I don't want More or Worse stretch marks

• Answer:

  Cycling won't give your stretch marks. It's always a good idea to exercise you can't tone muscles anyway else.