What are the benefits of using mechanical barriers during sexual act?

Explanation

### Step-by-Step Solution:

1. **Definition of Mechanical Barriers**:
- Mechanical barriers refer to contraceptive devices used during sexual intercourse to prevent conception. The most common examples include condoms for males and diaphragms for females.

2. **Prevention of Unwanted Pregnancies**:
- One of the primary benefits of using mechanical barriers is their effectiveness in preventing unwanted pregnancies. By creating a physical barrier, these devices stop sperm from reaching the egg during fertilization.

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