Last year, for example, in our recreational football program we had two boys age 13 who were about your height and weighed over 200 pounds. They played all season in our program and made great strides in their development. When they get to high school, the coach is going to be really glad to see them. You can do the same thing. Make sure to see a doctor and have a sports physical. Tell your doctor that you intend to play football and ask him for suggestions for conditioning routines that you can begin working on right away. Make sure you eat properly, avoid too much junk food and stick to the recommended conditioning activities. If you really want to play, you can!