The idea of a "cheat day" can be tempting, especially when you're trying to stick to a structured eating plan for diabetes, weight loss, or metabolic health. After all, what’s the harm in letting loose for one day if you’re “good” the rest of the week?
But the truth is more nuanced. Understanding how cheat days actually impact your body and brain can help you make more mindful choices, without sabotaging your long-term progress.
🤔 What Is a "Cheat Day" Exactly?
A cheat day typically refers to setting aside one day per week to eat foods that aren't part of your usual plan. This might include things like:
Pizza, burgers, fries
Sweets, desserts, or sugary drinks
Extra-large portions
Highly processed snacks or fast food
For some, it’s a mental break from discipline. For others, it can quickly spiral into overeating or guilt.
🔄 What Happens to Blood Sugar?
If you have diabetes or insulin resistance, cheat meals can cause:
Sudden blood sugar spikes that linger for hours
Glucose rollercoasters that lead to fatigue, cravings, and mood swings
Possible hypoglycemia after large insulin doses or corrections
Disruption in CGM trends that make it harder to track progress
One off-plan meal might not throw everything off. But consistent cheat days may set you back more than you realize.
🧠 The Mental and Emotional Trade-Off
Cheat days can also affect your mindset:
All-or-nothing thinking: Feeling like you must be perfect six days a week can build pressure, followed by guilt after a cheat day
Reduced self-trust: Overeating may leave you feeling out of control
Reinforcing food as a reward or punishment: This can lead to emotional eating habits that are hard to unlearn
If cheat days leave you feeling worse instead of recharged, it may be time to rethink the strategy.
⚠️ Potential Physical Setbacks
Water retention and bloating from high sodium intake
GI discomfort from rich or unfamiliar foods
Increased triglycerides or blood pressure when indulging frequently
Sleep disruption after heavy meals or late-night snacking
For people working to improve insulin sensitivity, even short-term setbacks can affect progress.
✅ Healthier Alternatives to "Cheat Days"
Rather than a full day of “off-limits” eating, consider:
Planned flexibility: Choose one meal each week to enjoy a favorite food in moderation
Upgrade cravings: Make a homemade version of what you’re craving with healthier ingredients
Mindful indulgence: Eat slowly, savor your food, and stop when you feel satisfied
Reframe your language: Instead of “cheat,” think “choice” or “flexible meal” without the extra guilt
If you don't eat an overly restrictive diet, there should be no "cheat days". Eating healthy at least 80% of the time helps avoid this. Simply sprinkle in light indulgences once or twice a week with a healthy meal.
🧭 The Bigger Picture: Sustainability Matters Most
What matters most is not what you eat on one day but how consistent your habits are over time. If you feel deprived all week just to binge on a cheat day, your plan may not be sustainable. Building in small, satisfying treats throughout the week can help you stay on track without needing to escape from your routine.
📅 Need Help Building a Flexible Plan?
Reach7 offers expert nutrition guidance, personalized food planning, and glucose monitoring to help you create a long-term plan that includes flexibility without compromising your health.
Book your visit today and build an approach you can actually stick with. No guilt required.

Author
Katrina Shellhouse, RD
Over 10 years of experience in diabetes care and weight management, combining her background in nutrition from culinary school and a Bachelor of Science degree in dietetics. As a wife and mother of three, she enjoys cooking, gardening, and grocery shopping on a budget. Katrina is fueled by her own passion to help clients make meaningful yet achievable lifestyle changes, and she has even lost 80 lbs recently through her diet and strength training journey!







