Eccrine glands are a type of sweat gland found throughout the human body, primarily in the palms, soles, and forehead. They play a crucial role in regulating body temperature by producing a watery sweat that evaporates from the skin's surface, helping to cool the body down. These glands are different from apocrine glands, which are found mainly in the armpits and groin and produce a thicker, odoriferous sweat. Eccrine glands are active from birth and are essential for thermoregulation, especially during physical activity or in hot environments.