This is where smart gadgets come in, which are not just cool accessories, but real tools of biohacking. They help you better understand your body, optimize your eating window, and achieve faster and safer results.
In this article, we present 5 useful gadgets that can become your allies on the journey with intermittent fasting.
🥇 1. Smart watch (Apple Watch, Fitbit, Garmin, Whoop, etc.)
📌 What it does: monitors sleep, activity, pulse, HRV, stress, calories and recovery level.
✅ Why it helps:
- It shows you when your body is rested and ready to fast
- Can you correlate digestion with your sleep score
- You can adjust the food window according to circadian data
🔧 How to use:use default apps or integrate them with zero, Whoop, Apple Healthor HRV4Trainingfor advanced analysis.
🥈 2. Glucometer (with blood test or sensor)
📌 What it does: Measures blood sugar before and after meals, or throughout the day (CGM — Continuous Glucose Monitor)
✅ Why it helps:
- See exactly how your body reacts to food
- Helps you identify glycemic spikes that can nullify the benefits of fasting
- They teach you which foods “keep you” better in fasting
🔧 Recommendation: classic glucometer Accu-Chek or CGM (Freestyle Libre, Dexcom). You can test in the morning in fasting and 1-2 hours after eating.
🥉 3. Ketone measuring device (from blood or breath)
📌 What it does: measures the presence of ketones, a sign that you are burning fat instead of glucose.
✅ Why it helps:
- It shows you if you have entered ketosis (0.5—3.0 mmol/L)
- Especially valid after 18—24 hours of fasting or in low-carb diets
🔧 Popular models:Keto Mojo (blood), Biosense (breath)
🧊 4. Cold shower/infrared sauna
📌 What it does: exposes the body to “good” (hormetic) stress → increases endurance, accelerates detoxification, stimulates mitochondria.
✅ Why it helps:
- Improves adaptation to fasting
- Decreases inflammation and increases HRV
- Saunas can stimulate the release of HGH (growth hormone)
🔧 Home:cold shower 30—60 seconds in the morning or evening. If you have access, use the infrared sauna 2—3x/week.
🔋 5. Body weight + smart scales with body composition
📌 What it does: shows you not only your pounds, but also your fat percentage, muscle mass and hydration.
✅ Why it helps:
- See clearly if you are losing weight from fat, not muscle mass
- Monitor your progress even when the scale is in place
🔧 Suggestions: Withings Body+, Xiaomi Mi Body Composition Scale, Eufy Smart Scale.
📊 Comparative table gadgets
Conclusion
Gadgets don't replace discipline — but they can become a “metabolic GPS” on your intermittent fasting journey.
Choose them according to your budget, needs and goals. Start simple, learn from the data, adjust your style and turn fasting into a smart process, not just instinctive.
Only if the refrigerator has HRV higher than you. 😅 You also need to eat disciplined!
Yes, it is a good value in fasting. Ideally between 70—99 mg/dL.
Not at all! They are optional. But they can bring clarity, motivation and personalization.

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