• The initial high torsional energy indicates that the system is initially in a high-energy state. This is because the molecules are initially arranged in a random way, and the interactions between the molecules are not optimized. • The decrease in torsional energy over time is due to the fact that the system is equilibrating. This means that the molecules are rearranging themselves in a way that minimizes the torsional energy of the system. • The fluctuations in torsional energy are due to the random nature of the molecular motions. However, the average torsional energy will decrease over time as the system relaxes to a more stable state. • The fact that the torsional energy is decreasing over time suggests that the NAMD simulation is accurate and that the system is equilibrating. This means that the results of the simulation can be trusted.