Last updated: April 2026
A juice cleanse replaces solid food with cold-pressed fruit and vegetable juice for a set period — typically 1 to 5 days — to reduce your body's digestive workload, flood your system with concentrated plant nutrients, and give your organs a structured reset. A 2017 study in Scientific Reports found that a 3-day juice-based diet significantly altered the gut microbiota, reduced body weight, and increased nitric oxide levels, with effects persisting 2 weeks after the cleanse ended [1]. If you're considering your first cleanse, this guide covers everything you need to know — what to expect, how to prepare, and how to get the most out of it.
What a Juice Cleanse Actually Is
During a juice cleanse, you consume only cold-pressed fruit and vegetable juice — no solid food, no coffee, no alcohol. Raw Juicery's cleanse protocol includes 7 juices per day made from 65 organic ingredients across 25 flavors, providing complete daily nutrition in liquid form.
Cold-pressed juice is different from the juice you buy in grocery stores. The cold-press extraction method uses hydraulic pressure to extract juice without generating heat, which preserves live enzymes, vitamins, and phytonutrients that heat pasteurization destroys. Learn more about how cold-pressed juice works.
Every Raw Juicery juice is HPP-protected and cold-stored, never cooked, and never shipped frozen — maintaining the full nutrient profile from pressing to delivery.
Why Do a Juice Cleanse
Your body processes approximately 2,000+ food decisions per week. Between processed ingredients, environmental toxins, caffeine, alcohol, and the cumulative stress of modern eating, your digestive system rarely gets a break. A juice cleanse provides that break.
The benefits are both immediate and cumulative:
| Benefit | When You Notice | What's Happening |
|---|---|---|
| Reduced bloating | Day 1–2 | Digestive system clearing, inflammation decreasing |
| Energy increase | Day 2 | Body running on concentrated nutrients instead of heavy digestion |
| Mental clarity | Day 2–3 | Reduced brain fog from gut-brain axis improvement |
| Clearer skin | Day 2–5 | Systemic inflammation dropping, antioxidant delivery increasing |
| Gut microbiome shift | Day 1–3 | Beneficial bacteria increasing, diversity improving [1] |
| Weight loss | Day 2–3 | Reduced water retention, caloric reset, metabolic recalibration |
Day 2 is when most people notice the shift. The first day involves adjustment — potential hunger, caffeine withdrawal headaches, and energy dips. By Day 2, your body has adapted and the benefits start compounding.
Choosing Your Cleanse Length
1-Day Cleanse
Good for a quick digestive reset after a heavy weekend or holiday. You'll experience reduced bloating and a mental reset, but the gut microbiome and deeper metabolic effects haven't fully kicked in yet.
2-Day Cleanse
Gets you through the adjustment period. You'll feel the energy shift and digestive benefits, but you stop right when the deeper reset is gaining momentum.
3-Day Cleanse (Recommended for Beginners)
The sweet spot. Three days is enough for meaningful gut microbiome changes [1], significant energy and clarity improvements, and a genuine metabolic reset. This is what we recommend for first-timers — it's long enough to experience real results without being overwhelming. A 3-day cleanse delivers more significant results than a 2-day cleanse because it extends past the initial adjustment period.
5-Day Cleanse
For experienced cleansers or those dealing with significant health goals. Five days allows for deeper detoxification, more substantial gut microbiome remodeling, and a more complete metabolic reset. Not recommended as your first cleanse.
How to Prepare for Your First Cleanse
Preparation makes the difference between a transformative experience and an uncomfortable one. Start 3–5 days before your cleanse:
- Reduce caffeine: Taper by 25% per day to avoid withdrawal headaches. Switch to green tea 1–2 days before. More on caffeine and cleanses
- Cut processed food: Eliminate refined sugar, fried food, alcohol, and processed snacks. Replace with whole grains, vegetables, fruit, and lean protein
- Increase water intake: Aim for 64+ ounces per day to prepare your body for the increased fluid intake during the cleanse
- Lighten your meals: Eat smaller, plant-heavy meals in the 2 days before. Soups, salads, and smoothies transition your digestive system gradually
- Clear your schedule: Don't start a cleanse during your busiest week. Light exercise is fine, but avoid intense workouts during the cleanse
Read the full preparation guide for a detailed day-by-day protocol.
What to Expect Day by Day
Day 1: Adjustment
Your body is adapting. Expect mild hunger (especially around meal times when habits kick in), possible headache if you're withdrawing from caffeine, and some fatigue. This is normal. Drink your juices at regular intervals (every 2–2.5 hours) and stay hydrated with water and herbal tea between juices.
Day 2: The Shift
Day 2 is when most people notice the shift. Hunger decreases, energy increases, bloating reduces, and mental clarity improves. Your body has shifted from processing solid food to running on concentrated liquid nutrition. This is the turning point — if you made it through Day 1, Day 2 rewards you.
Day 3: The Payoff
Energy is stable, digestion feels light, skin looks clearer, and your mind is sharp. You've moved past the adjustment phase into genuine metabolic and gut benefits. Many people describe Day 3 as when they feel the best — lighter, cleaner, more energized. Full day-by-day guide.
Common First-Cleanse Mistakes
- Starting without preparation: Going straight from a heavy diet to juice-only creates unnecessary discomfort. Taper for 3–5 days
- Drinking juices too fast: Sip your juices slowly over 15–20 minutes to maximize absorption and satiety
- Not drinking enough water: You need water in addition to your juices. Aim for 64+ ounces of plain water daily
- Intense exercise: Light walking, yoga, and stretching are fine. Skip the HIIT and heavy lifting
- Breaking the cleanse abruptly: Don't celebrate finishing with a pizza. Ease back into solid food gradually
After Your Cleanse
How you break your cleanse matters as much as the cleanse itself. Your digestive system has been in a rest state — reintroducing heavy, processed food immediately can cause discomfort and undo the gut benefits you've built.
Day 1 after: Smoothies, soups, steamed vegetables, fruit. Day 2 after: Add salads, whole grains, light proteins. Day 3 after: Return to your full diet, ideally keeping the processed food, sugar, and caffeine reductions permanent.
Read the complete post-cleanse eating guide for a detailed protocol.
FAQ
Is a juice cleanse safe?
Juice cleanses are safe for most healthy adults when done with properly formulated, cold-pressed juices. Raw Juicery's 7-juice-per-day protocol provides adequate calories, vitamins, and minerals for a 1–5 day cleanse. People with diabetes, kidney conditions, or eating disorders should consult their doctor first.
How much weight will I lose on a juice cleanse?
Most people lose 3–7 pounds on a 3-day cleanse, primarily from reduced water retention, cleared digestive contents, and reduced inflammation. Some of this weight returns when you resume solid food, but the metabolic and gut health improvements support lasting weight management.
Will I be hungry during a juice cleanse?
Mild hunger is common on Day 1, especially around habitual meal times. By Day 2, hunger significantly decreases as your body adapts to liquid nutrition and blood sugar stabilizes. Drinking juices every 2–2.5 hours and staying hydrated between juices minimizes hunger throughout.
Can I work during a juice cleanse?
Most people successfully work through a juice cleanse. Day 1 may bring mild fatigue or headache (especially from caffeine withdrawal), but by Day 2 energy and focus typically improve. Avoid scheduling high-stress or physically demanding work on Day 1.
What's the best juice cleanse for beginners?
A 3-day cleanse is the ideal starting point. It's long enough for meaningful gut, energy, and clarity benefits without being overwhelming. Raw Juicery's cleanses include 7 juices per day from 25 flavors and 65 organic ingredients — designed for both first-timers and experienced cleansers.
How often should you do a juice cleanse?
Once per season (every 3 months) is a sustainable rhythm for most people. Some people cleanse monthly for specific health goals. The key is listening to your body and using each cleanse as a reset point. Full frequency guide.
Can you exercise during a juice cleanse?
Light exercise — walking, gentle yoga, stretching — is encouraged and supports the cleanse process. Avoid high-intensity workouts, heavy lifting, or long-distance running. Your caloric intake is lower than usual, and intense exercise risks fatigue, dizziness, and muscle breakdown. Exercise guide.
What should I eat after a juice cleanse?
Ease back into solid food over 2–3 days. Start with smoothies, soups, and steamed vegetables on Day 1. Add salads and whole grains on Day 2. Return to normal eating by Day 3, keeping processed food and sugar intake lower than your pre-cleanse baseline. Full post-cleanse guide.
References
- Henning SM, Yang J, Shao P, et al. Health benefit of vegetable/fruit juice-based diet: Role of microbiome. Scientific Reports. 2017;7:2167. doi:10.1038/s41598-017-02200-6
- David LA, Maurice CF, Carmody RN, et al. Diet rapidly and reproducibly alters the human gut microbiome. Nature. 2014;505:559-563. doi:10.1038/nature12820
- Wastyk HC, Fragiadakis GK, Perelman D, et al. Gut-microbiota-targeted diets modulate human immune status. Cell. 2021;184(16):4137-4153. doi:10.1016/j.cell.2021.06.019
- Obert J, Pearlman M, Obert L, Chapin S. Popular Weight Loss Strategies: a Review of Four Weight Loss Techniques. Current Gastroenterology Reports. 2017;19(12):61. doi:10.1007/s11894-017-0603-8