Quantum Physics help us understand the properties of solids, atoms, nuclei, sub-nuclear particles and light.
The word quantum refers to discreteness.
Answer:
While exercise is a common cause of muscle fatigue, this symptom can be the result of other health conditions, too.
Causes of muscle fatigue
Addison's disease.
age.
anaerobic infections.
anemia.
anxiety.
botulism.
cerebral palsy.
chemotherapy.
The left ventricle is responsible for pumping oxygenated blood throughout the entire body, which requires a lot of work and pressure, hence why it is super thick.