It's really hot out there, guys.
Your heart rate goes up and your body loses a lot water during these hot summer months, so finding ways to stay cool is absolutely necessary.
This is when you need to know when the heat is getting dangerous: When you've gotten to the point of NOT sweating, that's a red alert signaling your body that your blood pressure is way too high. When this happens, instead of turning red, you actually become pale.
Make sure to stay indoors as much as possible. Don't strain yourself during exercising or any other sort of activity. And always, always, drink plenty of water.