Why they’re skinny: Reasons some people stay lean without trying

AI-generated image for representational purposes (Photo: Freepik)

Hunger and fullness cues work differently

One key difference lies in how the body perceives hunger and satiety. Dr Kharb notes that many thin people experience fullness faster and are more likely to stop eating once they feel satisfied. “They listen to their body cues naturally,” he explains. On the other hand, individuals who gain weight easily may not receive or recognise these signals as clearly, leading to overeating even when the body has had enough.

Small behaviours that add up over time

Staying lean doesn’t always require conscious dieting. According to Dr Kharb, subtle daily behaviours play a powerful role. Naturally thin people often eat slowly, snack less frequently, and stay in constant motion—walking more, standing instead of sitting, or even fidgeting, he explains. “These small actions burn calories over time and prevent gradual weight gain,” he says, highlighting how non-exercise movement can be just as impactful as formal workouts.

The myth of ‘eating anything without consequences’

The idea that skinny people can eat whatever they want without gaining weight is largely misleading. Dr Kharb calls it “mostly a myth,” explaining that what goes unseen is compensation. “If they eat more at one meal, they often eat less later in the day or skip meals when they’re not hungry. This natural adjustment helps maintain energy balance without deliberate effort,” he adds.