How Does Exercise Affect Your Appetite?


For three hours before, during and after, the researchers drew blood to check for changes in appetite-related hormones and asked people how hungry they felt. They also allow everyone to help out with their buffet lunch of lasagna, salad, rolls, soda, and strawberry shortcake, while unobtrusively observing how much food they consume.

Next, the researchers compared hormones, hunger, and real eating and found strange disconnects. In general, people’s hormones have changed in ways that can be expected to reduce their appetite after each exercise session. But the study’s participants did not report feeling less hungry or more hungry after exercising compared to when they sat down. And for lunch, whether they worked or not, they ate about the same amount, about 950 calories of lasagna and other buffet foods.

The result of these results suggests that brisk walking or light weight lifting may not affect our next meal as much as “other factors” such as lasagna (or butter rolls or pie) flavor and oozing flavors. Tanya Halliday, an assistant professor of health and kinesiology at the University of Utah, led the new study. People’s appetite hormones may have dropped a bit after their workout, but these drops didn’t have much of an impact on how much they ate afterwards.

Still, the exercise burned some calories, she said—about 300 or so per session. This was about 1,000 fewer calories than the volunteers consumed on average at lunch, but hundreds more than when they sat down. Over time, this difference can help with weight control, she said.

Of course, the study has obvious limitations. It looked at a single moderate, short exercise session done by several dozen out-of-shape participants. People who exercise regularly or do more strenuous exercises may react differently. Researchers will need to conduct more studies, including those with more diverse groups and those that take place over a longer time frame.

But even now, the finds have a soft, apple-pie appeal. Dr. “People shouldn’t be afraid to overeat if they exercise,” Halliday says. And she said “Thanksgiving is just one day” and it’s not going to affect your weight in the long run. So eat whatever you want at the banquet and enjoy. Halliday also recommended that if possible, go for a pre-hike or join a Turkey Trot with family and friends, not to curb your appetite, but to strengthen your social bonds and be thankful for moving forward together.



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