By Joseph Salvador Cowboys star linebacker Micah Parsons vomited twice during the first half of Sunday’s game against the Panthers, and apparently, it’s because he took a pre-workout dietary supplement. C4 is a powder that is supposed to be taken with a drink, and it also contains a significant amount of caffeine that will get anyone’s adrenaline pumping. Parsons said he ate a whole scoop of the supplement—dry without mixing it with a drink— and it didn’t agree with him. “It’s something I’ve never done before,” Parsons said, per The Athletic. “I took the [scoop] of C4 [dry]. As soon as I took …