Skipping breakfast before a gym session is hard enough. A new study points to an odd trick that might make the empty-stomach grind a little easier: a whiff of chocolate. Men who breathed in the scent of chocolate before and during a weight session cranked out more repetitions than they did after smelling plain water, and they managed it without rating the harder workout as any more punishing than usual.
No one ate a single square. Every bit of the boost came from smell alone. When the same men sniffed dark chocolate, they reported feeling less hungry and more full before lifting. When they sniffed milk chocolate, they mostly rated the scent as more pleasant. Both scents beat water on total reps completed.
Published in the journal Frontiers in Physiology, the research is preliminary, so it shows that the two happened together rather than nailing down exactly why. Still, the basic result is hard to ignore: a smell, and nothing more, nudged how much work tired muscles were willing to do.
How the Chocolate Smell Study Worked
Twenty-three healthy men took part at the University of Malaya in Kuala Lumpur, Malaysia. All were seasoned lifters, training at least twice a week for a minimum of two years, with an average age of about 23. Each showed up having fasted overnight for at least 10 hours, copying the state of someone who trains first thing in the morning on an empty stomach.
Each man completed three separate sessions spaced at least four days apart. One session paired the workout with the smell of dark chocolate (90% cocoa), another with milk chocolate, and a third with plain water for comparison. By design, neither the participants nor the staff counting reps were told which scent was which, a standard step to limit bias. Scents were prepared as liquids in small glass jars, and each man inhaled for 30 seconds at a time, both before lifting and between sets.
For the workout itself, participants did repeated sets of leg extensions, a seated machine move that targets the muscles at the front of the thigh, using a weight set to 80% of the most they could lift 10 times. They kept going until they couldn’t finish another set. After each set they rated how hungry they felt, how much they wanted to eat, how pleasant the smell was, and how hard the effort felt.
Source : https://studyfinds.com/whiff-of-chocolate-before-workout-may-curb-hunger-lift-reps-new-study-shows
