Vocal warm-ups are exercises designed to prepare the voice for singing or speaking. They help to relax the vocal cords, improve breath control, and enhance vocal range. Common warm-up techniques include humming, lip trills, and scales, which gradually increase in pitch and intensity. These exercises are beneficial for anyone who uses their voice regularly, including singers, actors, and public speakers. By incorporating vocal warm-ups into their routine, individuals can reduce the risk of strain or injury and improve their overall vocal performance.