The cold plunge craze sweeping social media may not be the metabolic miracle influencers claim it to be. According to a social media post from biochemist Dr. Layne Norton, the popular practice could actually sabotage weight loss efforts by triggering unexpected increases in appetite and food consumption.
A groundbreaking new study has revealed a surprising paradox: while cold water immersion does burn additional calories, it simultaneously drives people to eat significantly more food afterward. This potentially leadsto weight gain rather than the promised fat loss.
The research examined the effects of 30-minute cold plunge sessions. It found that participants burned approximately 20 more calories during cold water exposure compared to warm water or ambient air conditions. However, this modest caloric advantage was completely overshadowed by what happened next.
“They did burn more calories in the cold plunge group! But unless you call ~20 calorie difference in 30 minutes removing calories the fastest on the face of the earth, I’d say that’s pretty underwhelming,” Norton explained.
“Moreover, these individuals in the cold plunge group ate ~230 calories MORE in their post plunge meal compared to the group that was in warm water or the control group!”
This dramatic shift in eating behavior created what Norton describes as a “200 calorie swing for energy balance towards a calorie surplus” – exactly the opposite of what most cold plunge enthusiasts are hoping to achieve.
The study’s findings align with broader research showing that cold exposure can significantly increase daily caloric intake. Norton points to additional data demonstrating that “cold exposure for 24 hours increases calorie intake by over 400 kcal per day & did not increase energy expenditure as it seems to be compensated for when done over the course of a day.”
This compensation mechanism appears to be the body’s natural response to the metabolic stress of cold exposure. While the immediate thermogenic effect does burn calories, the subsequent hunger response can drive people to consume far more energy than they expended, creating a net positive energy balance that promotes fat storage.
The implications extend beyond just weight management. Norton also highlights research showing that cold plunge therapy may interfere with muscle growth when combined with resistance training. This finding challenges another common claim made by cold therapy advocates about enhanced recovery and performance benefits.
For fitness enthusiasts who incorporate both weight training and cold exposure into their routines, this could mean undermining their muscle-building goals while simultaneously promoting fat gain – a double setback for body composition improvements.
While cold exposure does activate certain metabolic processes, the net effect on energy balance appears to favor weight gain rather than loss in many individuals.
This doesn’t mean cold plunges are entirely without merit. The practice may offer legitimate benefits for recovery, mood, and other aspects of health and wellness. However, Norton emphasizes that people shouldn’t expect it to replace fundamental weight management strategies.
“If you wanna cold plunge, cool. Go for it. But don’t act like it’s magically going to take the place of diet & exercise because it fails miserably at that,” he stated.
For those who choose to continue cold plunging for other reasons, awareness of the increased appetite response can help them make more informed nutritional choices afterwards. It can help mitigate the unwanted caloric surplus that the research has revealed.
