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If you fallow the Paleo diet, you learn that it's not so much how much calcium you take in but how much you retain. A highly acidic diet will draw calcium out of the body. The modern western diet includes lots of grains which are acidic. Vegetables and fruits counter that to some extent. The Paleo d...

Try this article. There is a link at the bottom to a study like that addresses your query to some extent. http://www.davedraper.com/fusionbb/showtopic.php?tid/9300/ "Therefore, using heavy loads during explosive resistance training may be the most effective strategy to achieve simultaneous improveme...

Here's more than you ever wanted to know about Paleo.

http://www.paleodiet.com/

If you're doing HIIT right, 5 days/week will lead to burnout. Limit to 2 per week. The chocolate milk thing was discussed on Dr. Squat a while back. Yes, it's better than some sports drinks but is inferior to a custom blend of whey, carbs, amino acids, etc.

You really need to do squats and deadlifts. Once I started, it required the whole stack of weight on the ab/adductor machines to challenge me at all. If your back is bad, try strengthening it first. Start with back extensions, etc. Squats and deadlifts are very knee friendly compared to machines. St...