1. A system, comprising: means for providing a physical conditioning therapy that mimics effects of physical training, wherein the means for providing the physical conditioning therapy includes: a memory programmed with instructions for delivering a physical conditioning therapy that elicits sympathetic activity correlated to an exercise regimen to mimic a sympathetic response to the exercise regimen; and means performing the instructions to elicit sympathetic activity correlated to the exercise regimen to mimic the sympathetic response to the exercise regimen, wherein the means for eliciting the sympathetic activity includes means for intermittently stimulating a neural target to elicit the sympathetic activity correlated to the exercise regimen.