Name the hormone involved in the daily cycle or circadian rhythm of the body. From which gland is this hormone released ?

Explanation

**Step-by-Step Solution:**

1. **Identify the Hormone**: The hormone involved in the daily cycle or circadian rhythm of the body is called **melatonin**.

2. **Locate the Gland**: This hormone is released from the **pineal gland**.

3. **Understand the Function**: Melatonin plays a crucial role in regulating various bodily functions, including:
- Influencing metabolism
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