You want to try a juice cleanse, but questions are piling up? That's completely normal! This comprehensive guide to juice fasting answers the most common questions – from preparation to execution and proper reintroduction of food. Whether you're a beginner or experienced juicer, here you'll find everything you need to know for a successful juice fasting experience with I·DO.
➡ Discover your I·DO trial package now →
The essentials in brief:
- I·DO organic raw food juices are cold-pressed and preserved with pressure. With continuous refrigeration, they are shelf-stable for more than 10 days after delivery – the best-before date is on the cap. Once opened, they last 2 days in the refrigerator.
- Delivery in Germany: 2–3 business days. You will usually receive the shipping confirmation with a tracking link the day before or two days before shipping.
- I·DO juices come in deposit bottles that can be returned to most supermarkets with a deposit machine.
- Light exercise like yoga or walks is well-tolerated by most during a juice fast.
- Caffeine withdrawal is one of the most common triggers for headaches in the first few days of the cleanse (1).
- Fatigue in the first few days is related to calorie reduction – many feel significantly better from day 2–3 (2).
- Always seek medical advice if you have pre-existing conditions, are pregnant, breastfeeding, taking medication, or prone to hypoglycemia.
- The first day after the cleanse is crucial: Steamed vegetables, fruit, or light soups help your digestive system restart.
How long should a juice cleanse last?
The ideal duration depends on your previous experience with juice fasting:
- 1 day: Perfect for getting a taste (e.g., with the I·DO Juice Day).
- 3 days: The classic introduction – long enough for a conscious reset, but still manageable for everyday life.
- 6 days: For advanced users looking for a more intense experience (e.g., the Lean Green Juice Cleanse).
- From 7 days – especially for your first juice cleanse – only carry out with professional guidance.
➡ Tip for beginners: Start with 3 days and slowly increase!
Which I·DO juice cleanse is right for me?
The choice depends on your goals and preferences:
- I·DO Juice Day: Ideal for a trial run or intermittent fasting.
- I·DO 3-Day Organic Juice Cleanse: Combines green and fruity juices like Sweet Greens and Karma Carrot – perfect for starting juice fasting.
- Lean Green Juice Cleanse (6 days): For vegetable lovers with juices like Liquid Salad, Daily Greens, and Sweet Greens.
Unsure? Try the I·DO trial package → and find your favorite juices!
How many calories does a juice cleanse have daily?
A single I·DO organic raw juice contains about 21 to 60 kcal, depending on its composition. Vegetable-intensive juices like Easy Celery are at the lower end, while fruitier ones like Fireball Boost are slightly higher. The I·DO Easy Organic Juice Cleanseis around 683 kcal on average, and the Lean Green Juice Cleanse is about 519 kcal daily. Both have their place, depending on what you're looking for. Fruitier juices provide valuable plant compounds and variety in addition to natural sugar, and many find such cleanses simply easier to sustain.
When will my order arrive?
I·DO raw food juices are shipped chilled. Within Germany, delivery takes 2–3 business days.
- Shipping confirmation with tracking link is usually sent the day before or two days before shipping.
- Tip: Choose a delivery day when you are at home so the juices can be immediately refrigerated.
How long do I·DO raw food juices last?
- Unopened: More than 10 days after delivery (with continuous refrigeration). The best-before date is on the cap.
- After opening: 2 days in the refrigerator (if chilled before and after opening).
- Important: Since the juices are produced without preservatives and pasteurization, continuous chilled storage is crucial.
Should I prepare for a juice cleanse?
Preparation is not mandatory, but highly recommended:
- 1 week before the cleanse, avoid coffee, alcohol, sugar, and heavy meals – this makes the transition much easier.
- Slowly reduce caffeine: Because caffeine withdrawal is one of the most common triggers for headaches in the first few days (1).
Can I do a juice cleanse with certain health conditions?
Generally yes, but in the following situations or with the following conditions, you should always seek medical advice beforehand:
- Chronic illnesses: Diabetes, kidney disease, eating disorders
- Special life stages: Pregnancy or breastfeeding
- Medical peculiarities: Low blood pressure, taking medication, or tendency to hypoglycemia
- First juice cleanse with pre-existing conditions? Safety first – get professional advice!
During the juice cleanse: Tips & Tricks
Will I be hungry?
This is very individual. Some get into a rhythm surprisingly quickly and hardly think about food. One I·DO customer described it like this: "Due to the high nutrient content, I wasn't hungry and felt full of energy and motivated all day." If hunger arises, it often helps to drink an extra raw juice or resort to herbal tea.
Why am I getting headaches?
Headaches in the first one to two days are a known side effect, and caffeine withdrawal is considered one of the most common triggers (1). Drinking plenty of water and herbal tea helps support hydration. For severe or prolonged symptoms, you should seek medical advice.
Read more: Headaches during a juice cleanse: Causes, duration, and the best tips for relief
Is it normal to feel tired?
Yes, especially in the first few days. Your body is adjusting to a significantly lower calorie intake and needs energy for adaptation processes (2). Many report that the fatigue subsides after day two or three, giving way to a feeling of clarity and lightness. If the fatigue is very strong or persists, it can be a signal to interrupt the cleanse.
What else can I drink besides raw juices?
Water, organic vegetable broth, and unsweetened herbal teas are ideal. The goal is at least two liters of fluid daily, in addition to the raw juices. Warm water with lemon in the morning or herbal tea in between are good additions. You should avoid coffee, alcohol, and sweetened beverages during this time.
Can I exercise during the juice cleanse?
Light exercise like yoga, walks, or gentle stretching goes well with a juice cleanse and is considered pleasant by many. Intense workouts or strength training are less recommended, as the body has less energy available during this time. Listen to your body: If you feel fit, there's nothing against exercise. If you're tired, allow yourself to rest.
More info: Juice cleanse & exercise →
Can I work normally during the juice cleanse?
Many work normally during their juice cleanse. Especially in the first few days, some report slight fatigue or reduced concentration, but this usually subsides soon. Those doing a juice cleanse for the first time should ideally start it on a weekend or during a quieter week.
After the juice cleanse: The proper reintroduction of food
How do I properly break the juice cleanse?
The first day after is crucial. Start with light, easily digestible foods like steamed vegetables, fruit, or a soup. Your digestive system has been in a different mode and needs time to restart. Many report that after the cleanse, they eat more consciously and attentively. This transition is an opportunity to take something away from it.
How often can I do a juice cleanse?
This is individual:
- Some do 4–5 cleanses per year, others only two, or integrate juice days into their daily lives.
- Important: A juice cleanse should not be a permanent solution, but a conscious break.
- Caution: If you primarily use juice cleanses for weight control or to compensate for unhealthy eating habits (instead of implementing sustainable changes, of which weight loss may be a possible consequence – but not the main goal), you should consult a specialist.
Conclusion: Your start to a juice cleanse
A juice cleanse is not a miracle cure, but for many it's a valuable experience – a reset for body and mind. With the right preparation, realistic expectations, and knowledge of what to expect, nothing stands in the way of your first cleanse.
The most important rule: Listen to your body!
➡ Ready for your first juice cleanse?
👉 Order your I·DO juice cleanse now →
Sources
- Juliano LM, Griffiths RR. A critical review of caffeine withdrawal: empirical validation of symptoms and signs, incidence, severity, and associated features. Psychopharmacology (Berl). 2004;176(1-2):1–29.
- Müller MJ, Bosy-Westphal A. Adaptive thermogenesis with weight loss in humans. Obesity (Silver Spring). 2013;21(2):218–228.
