India, Dec. 10 -- Have you ever wondered why some people eat small meals to control their weight, still gain it, while others eat without any portion control and manage to stay lean? Dr Saurabh Sethi revealed the reason behind this phenomenon in a recent Instagram post.

On December 9, Dr Sethi, a gastroenterologist and hepatologist trained at AIIMS, Stanford, and Harvard Universities, highlighted that it is your metabolism that determines how much weight you gain after eating meals, not your willpower to consume more or less food. Here's how:

According to the gastroenterologist, everyone's engine is different. He explained, "Basal Metabolic Rate (BMR) is the energy your body burns just staying alive, breathing, thinking, digesting, and ...