Work boomer claims his body “cannot burn calories”

So this boomer I work with decided he wanted to drop 30/40 pounds after his doctor recommended it.

He and his wife decided to go on a diet and both lose weight.

A few weeks into the diet I overhear him complaining to another co worker “man this diet isn’t working! I’m only eating 300/500 calories per day and I haven’t lost a pound!”

My coworker heard this and started laughing thinking the boomer was making a joke. But he wasn’t. He was dead serious Boomer coworker says he looked up on the internet that some people “cannot burn calories” My other coworker chimed in and said “you do realize it’s impossible not to burn calories correct? You literally burn calories sleeping”

Boomer started getting louder about no no some people body go into “starvation mode” and how he must be one bc he only eats 500 cals a day and hasn’t lost a pound

I chimed in “your body doesn’t defy the laws of physics and if you stopped burning calories that means you have a very bad metabolic issue or you’d be dead”

Boomer coworker just was getting angrier and angrier about how he can’t burn calories bc he read it online

I asked him if he realized the large coffee he gets from Starbucks loaded with cream and sugar is def more than “500” calories so there’s now way he’s consuming that or less

The boomer literally said straight faced “coffee is mostly water! There’s barely any calories in it”

This guy has the diet of a 5yr old

Basically like most boomers his diet is shit and he doesn’t understand calories counting and how the body burns energy