Any activity is good and you'll notice a difference over time. If you want to optimize results, then go to fitness web site for a better workout regime.
It's not OK for any race to make jokes about another race. There's a lot of anger going on there right now and people are acting a bit irrational. It's no excuse, but that's the reality.
Yes, a good post. This guy was there, so I sort of feel obligated to believe him. It would be interesting to hear what other volunteers say. If it is true, then the media will publicize it.