The do-while loop is designed to execute the loop body at least once, regardless of the condition. This is because the condition is evaluated after the loop body is executed. If the condition is true, the loop will continue to run; if it is false, the loop will exit after the first iteration. This makes do-while loops particularly useful when you want to ensure that the code block runs at least once, such as when prompting a user for input or initializing a process.