Name the following:
The hormone that regulates the basal metabolic rate.

Explanation

To answer the question regarding the hormone that regulates the basal metabolic rate, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Basal Metabolic Rate (BMR)**:
- The basal metabolic rate (BMR) is the amount of energy expended while at rest in a neutrally temperate environment, in the post-absorptive state (meaning that the digestive system is inactive, which requires about 12 hours of fasting in humans).
- It represents the minimum number of calories required to maintain basic physiological functions such as breathing, circulation, and cell production.

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