Rexona's Advanced Protection Workout 220mL antiperspirant deodorant, specially formulated to keep men protected from sweat and odour for up to 72 hours and keep you fresh throughout the day. With motion activated sweat protection, our products are intelligently designed to work as hard as you do. We make it our business to know more about sweat, and what we learn informs every product innovation. Sweat, also known as perspiration, is a normal and healthy bodily function and it starts to occur just a few months after birth. We mainly sweat to cool our bodies down, a process called thermoregulation. Our brain sends a signal to over 3 million glands in our body to release sweat (a clear fluid made of water, salts and proteins). As this fluid evaporates from our skin, it lowers our body temperature.