Rising temperatures and increasing humidity levels have many people sweating buckets during physical activity. But the increasing amount of sweat released from the body during summer workouts may not just be the result of hard work.

While sweating is the body’s natural way of cooling down, excessive amounts of sweat may be due to dehydration, a common occurrence during summer months.

Dehydration occurs when the body does not take in enough water and electrolytes to function normally, according to Eastern Assistant Athletic Trainer Jennifer Tymkew. If left untreated, dehydration can lead to more serious conditions such as heat cramps, heat exhaustion or heat stroke.

While symptoms such as headaches, rapid heart rate and lightheadedness may occur in only some cases of dehydration, one symptom is universal.

“Thirst is an indicator for dehydration,” Tymkew said. “If you are thirsty, your body already has a depletion of water.”

Tymkew suggests drinking water before, after and during exercise to ensure that the body stays hydrated. People should not wait until they are thirsty or exercising to take in fluids, but should be drinking regularly, about eight glasses of water a day.

In addition to pushing fluids, Tymkew says concerned individuals can take other preventative steps against dehydration and other heat-related illnesses.

“Take breaks in the shade or indoors if you have to be in the direct sun for long periods of time,” she said. “Wear loose, unrestrictive clothing.”