Basic Life Support (BLS) is a set of emergency procedures used to sustain life in individuals experiencing cardiac arrest or respiratory failure. It includes techniques such as chest compressions and rescue breaths to maintain blood circulation and oxygenation until advanced medical help arrives. BLS is essential for anyone who may encounter a medical emergency, including first responders, healthcare providers, and even bystanders. Training in BLS is widely available and often includes hands-on practice with manikins to ensure proper technique. Certification courses typically cover the use of an automated external defibrillator (AED) and emphasize the importance of calling emergency services promptly.