Why did my glucose spike… I didn’t even eat? 🤔🔥
This came up on our call today and it’s an important “aha.”
Because your CGM isn’t just tracking food…👉 it’s tracking your physiology
1. Stress = a glucose rise (even without food)
When your body perceives stress—(emotional, mental, lack of sleep, rushing, overwhelm)
It activates your fight-or-flight response
This means:
- Cortisol ↑
- Adrenaline ↑
Your body is essentially saying:👉 “We need quick energy to handle this.”
So your liver:
- releases stored glucose
- may even make new glucose
📈 Result: your blood sugar rises… even if you haven’t eaten
2. Heat (sauna / hot shower) can do the same thing 🔥
Heat is actually a controlled stressor
When you’re in a sauna or hot shower:
- heart rate increases
- your body works to cool itself
- stress hormones rise temporarily
👉 Same signal: “We need energy”
So again:
- your liver releases glucose
- you may see a temporary bump on your CGM
3. This is NOT a bad thing (context matters)
Your body is designed to do this 👇
Short-term:✔️ Helps you respond✔️ Fuels your brain + muscles✔️ Supports adaptation
But…
If stress is happening all day, every day➡️ glucose can stay elevated more often than we want
4. The key takeaway
👉 Not every glucose rise is about food
👉 Not every spike is “bad”
Your CGM is showing you:
- stress
- recovery
- environment
- physiology in real time
This is a good reminder to shift our mindset to this:
“This isn’t good or bad… it’s information.”
Your experiment this week 👇
Pay attention to:
- stress moments
- rushing / multitasking
- hot showers / sauna
And ask:
👉 “What is my body responding to right now?”
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Why did my glucose spike… I didn’t even eat? 🤔🔥
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