OK, bear with me as I explain this a little bit.
I've never really "had" to exercise in my life. Still technically don't need to. I'm 5'5, 110 pounds, and a size 2, so I'm not looking to lose weight. However, I want to a) tone my stomach and b) just feel healthier overall. Also, I suffer from chronic migraines, and I've heard that a regular exercise routine can help in preventing them.
I get that TC might not be the best place to ask about this, but I felt like I'd be more with my type of people (heh) here rather than some sort of fitness forum. My goals are to tone and, more importantly, just increase my aerobic fitness. I can't even run on a treadmill without being completely out of breath really fast. Also, I've NEVER been in good aerobic shape, so I just have this overwhelming feeling of "where do I even start?" I don't even know how long I should be exercising, what I should be doing (bikes, stairs, treadmill?)... I'm so clueless, and I can't afford a personal trainer.
I only have access to an crowded university gym. I live in NYC, so it's difficult for me to truly run outside (I know people do it, but I always hate when I'm walking and nearly run over by runners).
What should I do? How long should I start with to build up my endurance? What types of machines should I use?