What is an indication of alcohol consumption earlier in the day?

A hangover is commonly recognized as a significant indication of alcohol consumption earlier in the day. This condition typically arises after the effects of alcohol have worn off and can manifest through various symptoms, including headaches, nausea, fatigue, and general malaise. The physical discomfort associated with a hangover is a direct consequence of the body reacting to the toxins produced when alcohol is metabolized.

The other options do not directly correlate with prior alcohol consumption. For instance, increased appetite can be influenced by various factors, unrelated to drinking alcohol. Clear thinking often does not align with the cognitive impairments that alcohol can cause during and after consumption. Enhanced creativity is a subjective experience that may vary from person to person and is not a consistent indicator of drinking behavior. Thus, a hangover stands out as the most definitive sign of having consumed alcohol earlier in the day.