Over on Lifehacker, there is a helpful article about exercises and eating right inexpensively:
Fitness Isn't Just for the Wealthy: How to Stay Healthy on a Budget
While I'm not generally into the "life hacking" approach, I do like the thoroughness with which they tackle the topic.
It has some good ideas on:
- exercising inexpensively (and yes, bodyweight routines make the list)
- saving money on better quality food (plus ones you don't hear often, like joining a CSA as a net savings overall)
- the importance of making a small investment now to avoid long-term health costs
- overall approaches to living more healthy while spending less than you might think you'd need to.
The article is very good. It's got links to other articles on the specific sub-topics, but even leaving them aside there is a lot of good information here.