Sweat glands are tiny structures in our skin that help regulate body temperature. When we get hot, these glands produce sweat, which is mostly water. As the sweat evaporates from our skin, it cools us down, helping to keep our body at a stable temperature. There are two main types of sweat glands: eccrine and apocrine. Eccrine glands are found all over the body and are responsible for most of our sweating. In contrast, apocrine glands are located in areas like the armpits and groin and become active during puberty. They produce a thicker sweat that can lead to body odor when it breaks down.