The simplest, quick, comprehensive way to know how fit you are is by using the scale. You could just step onto the scale at home to get a general idea of how much you weigh. The scale is helpful to make you know your exact weight regularly showing your weight loss and whether you are in need to change your daily routine or not. Bathroom scale is a necessity nowadays as you can save money & time and exercise at home then weigh yourself at home rather than going to the gym.