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Why a quick sugar hit sends your energy on a rollercoaster — the climb, the crash, and the cravings that pull you back for more. Tap through the body to see what's really happening beneath the tiredness.
Tap any labelled part of the body to see the role it plays — from the sugar hitting your blood to the crash your brain feels an hour later.
Blood sugar isn't just about "sweet foods" — it's a whole-body event. See how the sugar in your blood, your pancreas, your liver, your cells and your brain all take part in the rollercoaster.
👆 Tap any labelled region to begin.
A fast-carb meal doesn't give steady energy — it gives a climb, a sharp correction, and a dip that lands you lower than you started.
Fast carbs and sugar break down in minutes and flood the blood with glucose. Energy shoots up — the exciting first hill of the ride.
The pancreas fires out a big wave of insulin to clear the sugar fast. The bigger the climb, the harder insulin slams the brakes.
Sugar drops below where it began. The brain, low on fuel, calls for more — tiredness, brain fog and cravings. So the ride starts again.
Low-fibre, refined carbohydrate hits the blood almost as fast as pure sugar — the steepest climb.
Fibre, fat, protein and movement slow the release, so the rise is gentle and the drop never comes.
The clues clients describe are the crash phase in disguise — often blamed on willpower.
It's a ride, not a fuel gauge. Steady energy comes from a gentle rolling road — not a rollercoaster of highs and lows.
"Every big spike buys you an equal-sized crash later."
Insulin is the key. It unlocks your cells so sugar can get out of the blood and be used. No key, and the sugar has nowhere to go.
"Insulin knocks on every cell and says 'open up, dinner's here'."
Cravings aren't weakness. They're your brain, running low on fuel after the crash, doing its job — asking for the quickest sugar it can find.
"The 3pm biscuit isn't a lack of willpower — it's the bottom of the ride."
You choose the first hill. Adding protein, fat and fibre — or walking after eating — turns a steep climb into a gentle slope.
"Don't ban the carb — dress it so it can't spike you."
