
Actress Ku Hye-sun has officially confirmed her weight, reaching a significant milestone in her health journey.
Ku recently shared a photo on social media with the caption, “Entered 46 kg.” The image displayed a digital scale reading 46.78 kg. The actress had previously disclosed that she was dieting with a goal of losing 13 kg. She attributed her success to a disciplined regimen focused on adequate sleep, abstaining from alcohol, and following a low-sodium diet.
The Role of Quality Sleep in Fat Metabolism
Among Ku’s primary strategies, prioritizing quality sleep played a critical role in the weight-loss process. Research indicates that insufficient sleep increases ghrelin, the hormone that stimulates appetite, while decreasing leptin, the hormone responsible for satiety. This imbalance often leads to overeating.
In contrast, adequate rest helps stabilize these hormones and supports physical recovery and fat metabolism. However, medical experts note that excessively long or irregular sleep patterns can disrupt the body’s circadian rhythm. Maintaining approximately 7–8 hours of high-quality sleep at consistent times is considered ideal for weight management.
Impact of Abstaining from Alcohol
Eliminating alcohol is another factor that can directly improve weight-loss results. Alcohol is relatively high in energy, containing approximately 7 kcal per gram. Because the body prioritizes the metabolism of alcohol, fat-burning processes are often sidelined.
Furthermore, alcohol consumption tends to increase appetite, often leading to the intake of high-fat and high-sodium foods. By abstaining, individuals not only reduce unnecessary calorie intake but also support liver function and restore fluid balance.
Benefits of a Low-Sodium Diet
Finally, maintaining a low-sodium diet can reduce water retention, which often leads to immediate weight loss and a reduction in bloating. High sodium intake causes the body to retain excess water, resulting in edema and temporary weight gain.
For those dieting, experts suggest paying close attention to sodium levels. Using fresh ingredients instead of processed foods—and substituting salt with spices, vinegar, or lemon—can help reduce sodium intake without sacrificing flavor.
