 Of course, that number is expected to rise as the heat is expected to continue for the next couple of days. Some parts of the South Sound could get triple-digit temperatures as early as this afternoon. In extreme temperatures, our bodies have to work harder to keep cool, and with that comes the release of cortisol, the body's stress hormone. That could lead to the loss of sleep, which then turns into irritability. Now, some signs to look out for is heavy sweating, dizziness, a headache, and rapid heart rate symptoms.