Is it heat exhaustion?!

Question: When I'm out in the sun (usually 80+ degrees) I get very lightheaded, my pupils become dilated, take shallow breaths, and feel very weak. There are times when I'm just sitting that this happens. When I was younger I passed out while just sitting in a classroom with these symptoms, but it usually happens when I'm riding horses/outside walking. What do you think could be causing this?

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Answers: When I'm out in the sun (usually 80+ degrees) I get very lightheaded, my pupils become dilated, take shallow breaths, and feel very weak. There are times when I'm just sitting that this happens. When I was younger I passed out while just sitting in a classroom with these symptoms, but it usually happens when I'm riding horses/outside walking. What do you think could be causing this?

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Well it could be heat exhaustion.. You need to keep yourself hydrated.. drink atleast 8-10 glasses of water or some sort of liquid to keep yourself healthy in the heat.

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