What is the effect of depressants on the body?

Depressants, which include substances like alcohol, benzodiazepines, and barbiturates, primarily function by slowing down the central nervous system. This action produces various effects on the body, such as relief from anxiety and the promotion of sleep.

When a person consumes depressants, they may experience feelings of relaxation and calmness, as these substances can reduce the activity in the brain that is responsible for anxiety and stress. Additionally, depressants often induce drowsiness and can significantly increase the likelihood of sleep, which is one reason they are sometimes prescribed for conditions like insomnia or as anxiolytic treatments.

The other options presented do not accurately reflect the typical effects of depressants. For example, while stimulants increase alertness and energy, that is contrary to the effects of depressants. Likewise, the claim that depressants increase heart rate is more aligned with stimulants, which typically enhance cardiovascular activity. Lastly, instead of stimulating brain activity, depressants decrease it, which contributes to their calming effects. Thus, the option that correctly describes the effect of depressants is the one related to relieving anxiety and promoting sleep.