Over the years I’ve been asked to train people for almost every conceivable reason, but in general, most seem to fall into the following categories. I plan on spending the next few weeks writing a post/week about each of the following topics with sample routines, that can be followed by those of you without access to me. In the near future, I hope to be able to offer enhanced services, including personal, customized training routines for a nominal fee to individuals who are geographically, or otherwise incapable, of meeting with me in person. Until then, the sample routines that will be posted in the next few weeks can be used and adapted as you all see fit. Keep in mind, that you need to make sure you know how to perform each exercise movement properly. The site ExRx is an excellent resource and has free to view video of most common exercises being performed properly.
The general main categories, and sub categories, as I see it:
1) General health and fitness for the sedentary person: novice
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Youth
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Young adult
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Middle age
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Senior
2) Total Body Conditioning: intermediate to advanced
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Cardiovascular and musculoskeletal fitness
3) Body shaping: beginner to the advanced
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Weight loss
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Toning and Body Sculpting
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Body building
4) Power and strength training: advanced
5) Athletic performance: advanced, sports specific and functional training
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endurance
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Strength
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Speed
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Agility
Feel free to comment on the categories, and let me know if you feel I’ve left any out, or why you might not fit into any of the above. If I agree, I’ll update my categories, or explain why I disagree. Keep reading!
Fitnessgroan's Blog 
I would suggest rehab. I think a lot of people are in the gym to fix some problem they have and are well enough not to be in physical therapy. And, I suspect that some people treat low-grade depression with exercise. If not, they should. Exercise is supposedly as effective for treating depression as are medications.