```ruby
# frozen_string_literal: true

module Categories
  module Gender
    extend ActiveSupport::Concern

    included do
      before_save :set_gender_from_name
    end

    def set_gender_from_name
      self.gender = gender_from_name
    end

    # Relies on normalized name
    def gender_from_name
      if name[/women|athena|girl/i]
        "F"
      else
        "M"
      end
    end
  end
end
```

Add men? and women? convenience methods
user
```ruby
# frozen_string_literal: true

module Categories
  module Gender
    extend ActiveSupport::Concern

    included do
      before_save :set_gender_from_name
    end

    def set_gender_from_name
      self.gender = gender_from_name
    end

    # Relies on normalized name
    def gender_from_name
      if name[/women|athena|girl/i]
        "F"
      else
        "M"
      end
    end

    def men?
      gender == "M"
    end

    def women?
      gender == "F"
    end
  end
end
```
assistant