Temperatures soared around 110 degrees across the Valley Wednesday, but it still wasn't enough to keep everyone indoors.
"As long as there is a slight breeze and it's not too humid, it's not that bad," said Phoenix golfer Don Rondeau.
It seems a lot of Arizonans have a quiet confidence that they can handle the heat no matter what.
But registered nurse Ashley Bergeron from Banner Baywood Medical Center in Mesa told CBS 5 News, that kind of heat can be dangerous.
Banner Baywood had a flood of patients this month with heat-related illnesses and many of them were seemingly healthy people in their 20s and 30s, Bergeron said.
"I think the heat came on fast, and came on suddenly," said Bergeron. "I just think a lot of people weren't ready for it. They forgot to drink and by the time your body is not thirsty - you're already in danger."
Bergeron said even young active people can be overcome by the heat, if they don't take precautions.
Ralph Soto, 19, was out in the heat Wednesday. He said that he brought a lot of water with him so he is not worried about getting sick.
"We brought Powerade to keep us refreshed," said Soto. "We also have sunscreen in my bag, things like that. If you're out here for too long, it'll get you."
Health experts recommend drinking lots of water, seeking out shade, and not staying outside for very long.
Some of the symptoms of a heat-related illness include headaches, dizziness, vomiting and pale skin.
Copyright 2013 CBS 5(KPHO Broadcasting Corporation). All rights reserved.
Wednesday, July 30 2014 7:45 AM EDT2014-07-30 11:45:17 GMT
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