This Viral Korean “4-Week Diet Plan” Helped Netizens Lose 5KG in a Month

Koreans are known to desire slim, toned figures and are always jumping on the next diet fad. Most recently, this trending “4-Week Diet Plan” has taken Korea by storm with many praising the effectiveness of this structured plan.

Here’s what you need to know about this trending diet plan.

Disclaimer: Make sure to consult with a healthcare professional before embarking on any significant dietary changes. 

What Is the “4-Week Diet Plan”?

This diet plan is a gradual approach to weight loss, focusing on healthier eating habits and metabolism support. While it doesn’t require intense workouts at the start, it makes for an easier routine to follow.

By the later weeks, some light exercise is introduced to help with fat loss. Many Koreans who’ve tried this plan claimed to see results, with some losing up to 5kg in a month.

Here’s what the plan looks like:

Week 1: Prepping Your Body

The first week is all about resetting your eating habits. You can still enjoy your usual three meals a day, but here’s the catch:

Eat Slowly and Complete All Meals By 6pm

A big part of this plan is mindful eating — taking your time to eat and chewing your food properly helps with digestion.

It’s also best to have dinner by 6pm, just like Bae Suzy, who avoids eating or snacking after that to give her body enough time to digest. On top of that, all snacks and sugary drinks are a no-go!

Related Read: How These “Once-Chubby” Korean Stars Attain Their Current Svelte Figures

Hydration, Hydration, Hydration!

Staying hydrated is key, with a daily goal of at least 2 litres of water. For instance, TWICE, Sana boosts her water intake by mixing apple cider vinegar with sparkling water, satisfying her fizzy drink cravings while aiding digestion.

Even without exercise, you might notice your body feeling lighter by the end of the first week.

Related Read: TWICE’s Sana’s Weight Loss Secrets to a Fit, Fabulous Figure That’ll Have You Saying “I Can Do This!”

Week 2: The Two-Meal Rule

Things start to get more intense from week two. You’re now limited to just two meals a day — breakfast and lunch while dinner is completely off the table.

If hunger kicks in, you can curb cravings with filling fruits like bananas.

Increase Water Intake to 3L Per Day

Hydration is even more important at this stage, with the goal now set at 3 litres of water daily. Many K-pop idols, like BLACKPINK’s Jennie, swear by this habit to maintain clear skin and overall wellness.

Still No Exercise Required

At this stage, most weight loss comes from burning visceral fat, though visible changes may take a little longer to show. While you might experience some hunger pangs, many have noticed significant improvements in digestion and reduced bloating.

Week 3: Exercise & A Balanced Diet

By now, your body should be adjusting to the routine. This week focuses on nourishing your body with quality nutrients while incorporating light exercise.

Breakfast – Enjoy What You Like

For breakfast, you can enjoy what you like, but if you’re craving something sweet, take inspiration from MAMAMOO’s Moonbyul. Instead of reaching for sugary treats, she kickstarts her day with two sweet potatoes and a cup of milk.

It’s a simple yet nutritious way to fuel up without relying on processed sugar.

Power-Packed Lunch Choices

For lunch, focus on high-quality carbs that keep you full and energised. Options like sweet potatoes, oats, and beans provide sustained energy without spikes in blood sugar.

Light & Protein-Packed Dinner

For dinner, prioritise protein-rich foods to support muscle recovery and keep you feeling satisfied. Again, drink plenty of water and consider unsweetened tea for additional benefits.

For example, rather than resorting to extreme dieting, Jung So-min focuses on healthy habits by following a low-sodium diet and ensuring at least one meal a day includes Korean food. However, she keeps her dinner light and fibre-rich for better digestion.

Related Read: Here’s How Jung So-min Lost 10kg After Filming K-Drama ‘Playful Kiss’, Including Her No-Surgery Rule

Time to Get Moving

Now’s the time to start incorporating exercise!

Light cardio, such as skipping, brisk walking, or jogging, is recommended to help burn fat more effectively. If you’re looking for inspiration, take a cue from Sweet Home 2 Netflix star Lee Si-young.

She includes fat-burning activities like hiking and swimming in her routine and stays committed to her fitness by going on hikes at least twice a week.

Related Read: Sweet Home 2 Netflix Series Cast Lee Si-Young Shares 5 Tips To Build Muscles

Week 4: Refining Your Lifestyle

The final week follows the same eating plan as week three, but by now, you’ll likely notice a smaller appetite, better portion control, and a leaner appearance due to fat loss and a boosted metabolism.

If you’ve added strength training or yoga, you might also see a more toned and defined physique — just like BLACKPINK’s Jennie and Jisoo, who took up aerial yoga to level up their workouts.

This fun yet challenging practice combines traditional yoga with aerial acrobatics, helping to build strength, improve flexibility, and relieve stress.

Related Read: What BLACKPINK’s Jennie Eats And Does To Get Her Body in Shape for Concerts

This 4-week plan isn’t just about cutting calories — it’s about retraining your body to develop healthier habits for long-term success. So, are you ready to give it a try?

7 Lazy Hacks to Build a Slimmer Body Without Extra Effort

If you’re not ready to commit to the full plan, here some easy habits that can help you lose weight effortlessly:

1. Get 7 Hours of Sleep Every Night – Proper rest helps regulate hunger hormones and prevents late-night cravings, making it easier to manage your weight. Song Ji-Hyo once mentioned that she prioritises getting plenty of sleep, as she values comfort over simply looking good.

2. Hug Your Knees for 5 Minutes Before Bed – A simple stretch before sleeping can relax muscles, improve blood circulation, and make falling asleep easier.

3. Drink Honey Water First Thing in the Morning – Honey contains fatty acids that aid digestion, reduce bloating, and support gut health.

4. Eat Quality Carbs for Breakfast – Swap out refined carbs like white rice and noodles for whole grains, oats, and sweet potatoes.

Korean actress Nana is a total foodie who enjoys indulging in lobster rolls, pizza, and burgers on her cheat days. However, she balances it out with discipline—staying hydrated, reducing salt and sugar intake, and avoiding late-night snacks. health and prevent bloating, making them essential for a sustainable diet.

Related Read: Mask Girl’s Actress Nana Shares How She Gets Bikini-Body Ready

5. Avoid Crossing Your Legs – This common habit can affect blood circulation and cause thicker calves over time. Keep those legs straight!

6. Drink a Large Glass of Water – 30 minutes before meals to feel fuller and avoid overeating. Stick to the “8 cups of water” rule daily to support weight management and overall health.

7. Try the “16:8 Fasting Method” – The 16:8 fasting method has gained popularity among celebrities for its weight loss benefits. Taiwanese singer and actress Rainie Yang swears by this method, revealing that it helped her shed 6kg in just two months.

By eating within an eight-hour window and fasting for the remaining 16 hours, she was able to manage her weight while still enjoying her favourite meals in moderation.

Related Read: The “168 fasting method” helped Rainie Yang lose 6kg in two months – here’s how it works

Featured Image Credit: somin_jj/Instagram, Netizen Buzz, & mo_onbyul/Instagram