I either bike or walk to work in all but the absolute worst weather. Not only do I get three miles of biking or walking in each day, but I also save money on gas, parking, maintenance, etc.
Another way that health and savings fit together is that when you eat at home, not only is it cheaper, but you also have absolute control over everything that you're eating. No wondering "how much salt did they use?" or "is there butter in this?"