>How do I go about gaining cardio endurance? Currently I can
>do about 45 mins step but would like to extend that. I get
>winded very quickly walking up a hill or doing leg presses.
Hi, Jenn. Just keep at it, and add on a little at a time. It will come, with time. Go from 45 minutes to 50 minutes over the course of two weeks, for example. Tackle that hill on a regular basis (every other day or 3 times a week, for example), and try to get a little better each time.
Your endurance will increase as you work on it.
Leg presses are tough, but it's not cardio endurance that makes them so, it's because they are a tough resistance exercise. Again, keep dong them, and you'll get better at them.
And don't be dismayed if your progress is slow. It will come when it comes!