What types of cross-training can I do to improve my stamina/cardiovascular fitness?

What types of cross-training can I do to improve my stamina/cardiovascular fitness?
I like to bike and swim whenever I'm not running, but so far biking and swimming are the only types of cross training sports I can think of. I'd like some variety.

Posted by lestermount
Those are the best two ways to cross train, you could use an elliptical machine if you can find one.

Posted by Jimmy
Elliptical machine, Stair climber. Personally I think swimming is the best and takes stress off the body.

What do you think? Answer below! More vigorous exercise can help improve fitness of the heart and lungs, which can provide even more consistent benefits for lowering heart disease risk. ... Exercise Fitness Blog

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