Chewing gum burns about 11 extra calories per hour. Researchers at the Mayo Clinic measured it directly. Standing up from your chair burns even less.
Put one more number next to it. Walking at the slowest pace imaginable — barely a mile per hour — burns about six times more additional energy than an hour of chewing. Those numbers come from the same people, measured in the same session. Your jaw is working. It is just doing almost nothing.
Does Chewing Gum Actually Burn Enough Calories to Matter?
Chewing gum increases energy expenditure by about 11 calories per hour — a real, directly measured effect more than standing up from your chair but about six times less than the slowest walk. The effect is scientifically valid but practically irrelevant for weight management.
— Levine, Baukol & Pavlidis 1999 · New England Journal of Medicine · n=7
You may have seen the projection: chew gum all day and you could lose 5 kilograms in a year. That calculation traces back to the same data. It requires chewing during every waking hour of every day — no breaks, no forgetting the pack at home — while changing nothing else about how you eat or how you move. It was presented as a theoretical ceiling. Fitness content turned it into a tip.
1 mph
The measurement itself is clean but narrow — seven people, all at a healthy weight, all chewing at a controlled pace. At eleven calories an hour, the math never reaches anything a body would notice.
What makes the finding worth knowing is not the calorie count. Chewing gum belongs to a category called NEAT — non-exercise activity thermogenesis — the umbrella for everything your body does that is not sleeping, eating, or deliberate exercise. Fidgeting. Adjusting your posture. Pacing while you are on the phone. Walking to the kitchen and forgetting why. All of it costs energy, and in that company, gum is near the bottom.
But NEAT itself is enormous. The variation in daily NEAT between people can reach hundreds of extra calories — enough to explain why two people eating the same food at the same desk end up at different weights over a year.
Eleven calories per hour is real. It is also a rounding error in a system where fidgeting, pacing, and posture shifts quietly burn hundreds more — without you noticing, without a gym, and without a single piece of gum.