Chocolate milk can be good in some circumstances and bad in other circumstances. Chocolate milk can actually be a very healthy drink or a bad drink. Chocolate milk contains sugar and it may be high in fat. So, you should look at the ingredients on the carton. Pick a carton of chocolate milk that is low in fat and sugar. After running, the runner needs to replenish his vitamins and elements that were lost in the exercising.
A study was compared to see if chocolate milk or sports drinks were better after a run. The participants were told to run which they did. Then some of the participants drank chocolate milk and others drank sports drinks. Both were then told to run some more. After running there was no difference between how tired they were.