A Slim Jim is a dense, preservative-laden stick of what passes for meat. You're not eating a cut of beef, but rather a factory-made imitation, loaded with sodium nitrite and other chemicals to keep it 'fresh' for months. It's a science experiment, not a meal.
Why trash
Mechanically separated chicken, corn syrup, soy protein, and sodium nitrite shaped like a stick.
Try instead
Grass-fed beef jerky