Final answer:
Body weight affects the percentage of alcohol in your blood because alcohol is distributed throughout the body in proportion to the amount of body water. A person with more body water will have a lower blood alcohol concentration (BAC) compared to someone with less body water for the same amount of alcohol consumed.
Step-by-step explanation:
The percentage of alcohol in your blood, also known as blood alcohol concentration (BAC), is affected by your body weight. This is because alcohol is distributed throughout the body in proportion to the amount of body water. A person with more body water will have a lower BAC compared to someone with less body water for the same amount of alcohol consumed.
For example, if two people of different body weights consume the same amount of alcohol, the person with a higher body weight will have a lower BAC. This is because the alcohol is diluted in a larger volume of body water.
Therefore, it is important to consider body weight when evaluating the effects of alcohol on the body.