In one experiment, a mouse is placed on a scale pan under a metal mesh and the balance is balanced

In one experiment, a mouse is placed on a scale pan under a metal mesh and the balance is balanced, leaving it alive. for a while. The mouse actively moves around the scales. The experiment lasts about 40 minutes. What could the scientists observe at the end of the experiment?

The mouse was actively moving. However, she did not eat or drink. She spent more energy, water, glycogen stored in the liver in reserve. Taking into account the factor of psychological pressure on the mouse, it was losing food supplies much faster. As a result, after some time (40 minutes), scientists began to notice that the balanced scales ceased to be in a state of equality, the bowl with the mouse became higher than the bowl with weights. And they concluded that after forty minutes of active movements, being under a metal mesh, the mouse lost some body weight, physiological weight.