Collaborative Fitness

I've really thought a lot about what I could do with my kids to do a collaborative project. Fitness, nutrition and obesity among our young people is a hot topic now a days. Do the kids really see how important it is? I figure the project I've thought of could allow kids to really see first hand what it is to be fit. Students would be chosen randomly off of class lists for the entire grade. There would be 4 groups chosen instead of 3.
One group could do reasearch either online or a visit to their own pediatritian or maybe one of our own parents (who is a doc) or school nurse could help them get the right info of what a fit 6th grader should be like. Examples would be average ht and wt. What their resting pulse should be, blood pressure and hr during a 20 min. cardio workout (of course other info they feel would be necessary) They would then take a physical themselves to see how they would compare. With this information, this group will prepare a mini fitness program for this age group.
The next group would work on the nutritional aspect of things. Before doing research, this group would would be required to do a food diary (no restrictions) on what they would eat for 7 days and record every bit that goes into their mouths. The diary would be signed each nite by their parents and checked for accuracy. Once that is done, students would research what a healthy balanced diet would look like for a fit 6th grade student. They would also map out a diet plan for an obese 6th grade student by looking at labels and using research to see how many calories it should be based on for that student. This group would also have a physical to see how they compare.
The third group would put it all together and live the research the first two groups put together. Before they start, they would have a physical (for 2 reasons, to make sure they were healthy enough to withstand the challange and the other to show a before and after), and they would also keep a food diary for 7 days. This group would also take a pre and post fitness test (on days 1 and 14) to see how they compare. This group will have 14 days to do improve their test results as well as their physical and nutritional habits.
The final group will do all of the comparison data collected and do a presentation to their grade level based on the information they have found.