Women who diet and exercise can now measure the effectiveness of their fitness programs. Unlike ordinary bathroom scales, Tanita's Iron Girl Body Fat / Body Water UM-060GL scale distinguishes fat-loss from weight loss, which is what truly matters. This gives women the ability to put weight loss into perspective by measuring fat loss, and at the same time, monitor your hydration levels. Adequate fluid intake is essential for athletes before, during, and after exercise, and The Tanita UM-060GL Body Fat Scale makes sure you stay between the optimal levels of 45-60% (for females).