The afternoon energy slump is not just a feeling but a scientifically confirmed physiological reality. Neuroscientist Dr. Raviya Allada from the University of Michigan told *Daily Mail* that drowsiness peaks most strongly at 1:27 p.m. and 2:06 p.m.
According to the expert, the human body follows a circadian rhythm, with peak productivity occurring in the morning — around 10:00 a.m. However, after lunch, at about 1:30 p.m., most people begin to feel an energy dip. This is linked to so-called “sleep pressure” — the natural increase in the need for rest the longer we stay awake.
As Dr. Allada explains, during the day there is a “tug-of-war” in the body between circadian rhythm, which keeps us alert, and the growing desire to sleep. Drowsiness usually wins — especially in the afternoon.
Research supports this: in a survey of 2,000 office workers, peaks of fatigue were recorded at 1:27 p.m. and 2:06 p.m. More than a quarter of respondents blamed the slump on prolonged screen time, and 22% cited infrequent breaks at work. Nearly 25% said colleagues interfered with their productivity.
Experts note, however, that one of the key causes of daytime fatigue is poor diet. Sugary foods and refined carbohydrates — such as white bread, pasta, and sweetened cereals — are especially harmful. According to Professor Sai Krupa Das of Tufts University, such foods trigger a sharp spike in blood sugar and insulin, inevitably followed by a crash in energy and drowsiness.
Instead, specialists recommend protein- and fiber-rich foods, which help maintain a more stable energy level.
The most effective way to cope with afternoon fatigue is a short nap of about 20 minutes. If napping isn’t possible, a walk in the fresh air can help. Physical activity stimulates blood flow to the brain, improves concentration, and has a positive effect on overall well-being.






