Florida Heat & Humidity Survival — Why 92°F Here Feels Like 110°F, and the Hydration Math That Keeps You Out of the ER

Florida's heat isn't the temperature — it's the dew point. A 90°F July afternoon at 75% humidity is more dangerous than a 105°F Phoenix day. Here's the playbook: heat-index math, the morning rule, hydration math, and how to spot heat stroke before it puts you in an ambulance.