Here's why:
* Adipose tissue is composed primarily of adipocytes, cells that store fat (triglycerides).
* Triglycerides are a highly efficient form of energy storage, providing more energy per gram than carbohydrates or proteins.
* When the body needs energy, it breaks down triglycerides into fatty acids, which can be used as fuel by various cells.
Other connective tissues, like bone and cartilage, do not function as primary energy stores.
