Resistance machines are fitness devices designed to help individuals build strength and muscle by providing controlled resistance during exercises. These machines typically use weights, bands, or hydraulic systems to create resistance, allowing users to perform various movements targeting specific muscle groups. They often have adjustable settings to accommodate different fitness levels and goals. Using resistance machines can enhance workout safety and effectiveness, as they guide users through proper motion and reduce the risk of injury. Common types of resistance machines include weight machines, cable machines, and leg press machines, each focusing on different areas of the body for a comprehensive strength training routine.