Depressants are a class of substances that slow down the central nervous system, leading to a calming effect on the body and mind. Common examples include alcohol, benzodiazepines, and barbiturates. These substances can help reduce anxiety, promote sleep, and relieve muscle tension, but they can also impair coordination and judgment. While depressants can be prescribed for medical purposes, misuse can lead to serious health risks, including addiction and overdose. It is important to use these substances only under the guidance of a healthcare professional to avoid potential negative effects on physical and mental health.