Exercise - absolutely under normal circumstances, caution:

http://en.wikipedia.org/wiki/Hyponatremia

exercise also extends the half-life of fluoride.

Fluoride damage leads to impaired glucose tolerance, type II diabetes:

"The NRC found that there is substantial evidence of a causal connection between fluoridation materials and the following maladies: increased bone fractures, Stage 1 skeletal fluorosis (arthritic joint stiffness and pain), decreased thyroid function, impaired glucose tolerance (Type II diabetes), earlier sexual maturity, lowered IQ, and possibly osteosarcoma. Although the EPA commissioned the report, the EPA has done nothing to implement the report’s findings. In fact, it has been strangely and completely silent regarding the report."

http://fluorideclassaction.wordpress.com/

In summary then, fluoride causes type II diabetes leading to an obesity epidemic and those affected are blamed and ridiculed by an ignorant public who are repeatedly brainwashed by the media to acknowledge obesity as a 'brought it upon themselves' malady. Those labelled obese are currently being denied medical treatment as a result.

Then, to add injury to injury, they are forced into 'fat camps' to exercise (extending the fluoride's half-life).