Source: Channel 3000 (Madison, Wisc.)

As high school football season kicks off, there’s a heightened focus on player safety in light of the untimely death of Maryland offensive lineman Jordan McNair, who died from heatstroke earlier this summer.

What are the signs?

• A throbbing headache
• Dizziness
• Lack of sweating despite the heat
• Muscle cramps
• Nausea
• Rapid heartbeat

If you, or anyone you know, if experiencing these symptoms, you should first get out of the heat, cool-down and drink water. If the symptoms persist or you have a fever of 104 degrees or higher, you should get medical help immediately.

For more on this story, visit Channel 3000.

Do you have a thought about this article that you would like to share? If you do, email managing editor Dan Guttenplan at dguttenplan@ae-engine.com. Tweet us @fnfcoaches.