As students head back to school and after-school sports practices kick into full gear amid near triple-digit temperatures across the Houston area, Houston Methodist experts are offering guidance on the new University Interscholastic League (UIL)’s heat safety rules and how student-athletes can stay safe in the extreme heat, the hospital system said in an August 20 release.

For the 2026-2027 school year, UIL now requires schools to use Wet Bulb Globe Temperature (WBGT) monitoring to assess outdoor conditions and determine whether modifications need to be made for practices, games and marching band activities. Previously, WBGT monitoring was recommended but not required. Schools must use WBGT readings to determine when additional water breaks, reduced practice intensity, modified equipment requirements or activity delays may be necessary to help protect students from heat-related illness.

"Extreme heat doesn't affect every athlete the same way, which is why relying on more than the temperature alone is so important," said Dr. Irvin Sulapas, a board-certified primary care sports medicine physician at Houston Methodist West Hospital. "The goal is to get a clearer picture of heat risk so students can compete safely."

Symptoms of heat exhaustion can include fatigue, nausea, dizziness, muscle cramps, vomiting and confusion. Without prompt treatment, heat exhaustion can progress to heat stroke, a life-threatening medical emergency.

Extreme heat is a major public health concern in Harris County. The Houston Health Department tracks emergency visits linked to heat from April to October, showing spikes during high heat and humidity. HRIs include:

· Heat cramps – muscle pains/spasms from dehydration and salt loss.

· Heat exhaustion – heavy sweating, weakness, dizziness, nausea.

· Heat stroke – body temp ≥104°F, hot/dry skin, confusion, possible unconsciousness

If you or someone you know shows signs of heat-related illness, seek immediate emergency care. Houston Methodist West Hospital’s ER is equipped to handle HRIs and can transfer patients if needed. For non-emergency medical needs, use their primary and specialty clinics.