10. Cool off in water

“For people suffering heatstroke, rapid cooling is critical in long-term outcomes and preventing fatality,” says Lee. The most effective cooling technique if you start to overheat: cold water immersion, or sinking up to at least the chest in a tub filled with cold (even ice) water. This increases the transfer of heat from the body to the surrounding water up to 70 times faster than just trying to use the air, she adds. If you can’t hit a tub or the shower, Lee advises covering your entire body in cold, soaked towels, and frequently trading them for fresh cold ones.

Just be careful not to submerge your head all at once—plunge from the heat into ice cold too quickly and you could put your body at risk for shock.

11. Stay on alert for 48 hours

Heat exhaustion and heatstroke exhibit the same initial symptoms—headaches, dizziness, and fatigue. Both involve the same treatments, too: rest, cool your body, and rehydrate.

But whereas you’ll recover from heat exhaustion within a day or two, heatstroke will continue to get worse and displays “profound central nervous system disturbances,” as Sawka says, which means things like getting combative, having seizures, and maybe even losing consciousness. If your symptoms aren’t getting better with rest, cooling, and hydration, you need to head to the hospital.

Source: www.mensfitness.com