Feb 18 • 07:50 UTC 🇶🇦 Qatar Al Jazeera

Scientists to Al Jazeera: Physics explains post-iftar lethargy in Ramadan

A scientific explanation for the lethargy felt by many after breaking their fast during Ramadan is discussed, highlighting the body's energy storage mechanisms and their impact on post-meal energy levels.

In a recent discussion on Al Jazeera, physicist Dr. Haitham Shaaban explained the physiological reasons behind the common feelings of lethargy after iftar during Ramadan. Contrary to popular belief that eating leads to immediate energy, the body does not instantly convert food into energy. Instead, it relies on stored energy, primarily glucose in the blood and liver, and fat reserves, which cannot be replenished just by consuming a meal. This misunderstanding leads to a paradox where, despite eating, individuals feel less energetic after iftar. Dr. Shaaban emphasized that the energy used for various activities post-iftar does not come directly from the meal consumed but from energy reserves built up prior to eating. This creates a delay in energy utilization, which might explain the fatigue many experience after breaking their fast.

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