What kind of contraction occurs in your neck muscles while you are reading your class assignment?

Explanation

### Step-by-Step Solution

1. **Understanding Muscle Contraction**:
- Muscle contraction occurs when muscle fibers are activated by nerve impulses. Each muscle fiber is controlled by a motor neuron, and the strength of contraction is determined by the number of muscle fibers that are activated.

2. **Identifying the Type of Contraction**:
- While reading for an extended period, the neck muscles are held in a fixed position. This leads to a specific type of muscle contraction.

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