Alcohol negatively impacts the aspect of sleep quality. While alcohol may help a person fall asleep faster due to its sedative effects, it leads to poorer overall sleep quality by disrupting the sleep cycle. Specifically, alcohol reduces the time spent in restorative rapid eye movement (REM) sleep, which is vital for healing, memory retention, and feeling rested. It also causes fragmented sleep with frequent awakenings during the night. Alcohol can worsen breathing-related sleep problems like snoring and sleep apnea, but the primary negative impact on sleep itself is the reduction in sleep quality, especially REM sleep.
Therefore, the correct option is:
sleep quality.
