A muscle cell that has above average energy needs would probably have an increased number of mitochondria.
Mitochondria are often referred to as the powerhouse of the cell because they are responsible for producing energy in the form of ATP (adenosine triphosphate). Muscle cells are highly active and require a significant amount of energy to contract and function properly. Therefore, they contain many mitochondria to meet these energy demands.
While ribosomes are necessary for protein synthesis and chromosomes are essential for genetic information, they do not directly relate to the energy requirements of the cell in the same way that mitochondria do. The increased number of mitochondria ensures that the muscle cell can efficiently produce the energy it needs to sustain its activity.