SAEDNEWS: Does Sleeping at This Time of Day Contribute to Weight Gain?
According to Saednews, An afternoon nap, often called a midday snooze, is a habit many of us know well. After a hearty lunch, it's common to feel sluggish and sleepy, making the bed almost impossible to resist. But does this relaxing break support weight loss, or could it stand in the way of your fitness goals?
Some people believe that sleeping during the day slows metabolism and leads to weight gain. On the other hand, recent research suggests that our bodies actually burn more calories during certain afternoon hours. So, which is true? Let's examine the scientific evidence to find out.
The short answer is that it depends on how long you nap and when you do it.
A short nap taken at the right time is not only unlikely to cause weight gain but may even support healthy weight management. In contrast, long or poorly timed naps can interfere with metabolism and make weight loss more difficult.
To understand why, it's important to look at the body's circadian rhythm, also known as the biological clock. This internal system regulates hormone production, body temperature, energy levels, and even calorie burning throughout the day.
A study published in Current Biology found that the number of calories the body burns while resting is not constant over a 24-hour period. Resting energy expenditure is approximately 10% higher during the late afternoon and early evening than in the early morning. In simple terms, if you rest during those hours, your body naturally burns slightly more calories than it would during an equivalent period in the morning.
However, the same study also found that disruptions to normal sleep patterns—such as those experienced by night-shift workers—can disturb the circadian rhythm and increase the long-term risk of obesity. This means that while a brief, well-timed nap may be beneficial, frequent long or irregular daytime sleeping can interfere with the body's natural rhythm.
To understand how afternoon naps influence body weight, we also need to consider hormones that regulate appetite and metabolism.
One of the most important is cortisol, often referred to as the stress hormone. Elevated cortisol levels encourage fat storage, particularly around the abdominal area.
Poor nighttime sleep or chronic sleep deprivation keeps cortisol levels elevated. At the same time, insufficient sleep increases ghrelin, the hormone that stimulates hunger, while reducing leptin, the hormone responsible for signaling fullness. This hormonal imbalance increases appetite and cravings for high-calorie, sugary foods.
A short, intentional afternoon nap may help reduce stress, lower cortisol levels, and decrease emotional eating, making it easier to resist unhealthy food choices.
The difference between a beneficial nap and a harmful one largely comes down to its duration.
A large study published in Obesity in 2023 analyzed data from more than 3,200 adults. Researchers found that individuals who regularly took naps lasting more than 30 minutes had:
Higher Body Mass Index (BMI)
Greater risk of metabolic syndrome
Increased likelihood of developing conditions associated with heart disease and type 2 diabetes
Specifically, long nappers experienced approximately:
2.1% higher BMI
8.1% higher metabolic syndrome scores
Interestingly, naps lasting less than 30 minutes were not associated with these risks. In fact, participants who took shorter naps were less likely to have elevated systolic blood pressure than those who never napped at all.
These findings are supported by a comprehensive 2023 systematic review and meta-analysis published in Scientific Reports. After analyzing 12 studies involving more than 170,000 participants, researchers concluded that daytime sleeping was associated with a 22% higher risk of obesity overall. However, the association became much stronger when naps lasted longer than one hour.
If you enjoy napping, following a few simple guidelines can help you gain the benefits without negatively affecting your weight.
Aim for 20 to 30 minutes.
Short naps improve alertness, concentration, and mood without allowing the body to enter deep sleep. Deep sleep during the day often causes sleep inertia—the groggy feeling after waking—and may temporarily reduce metabolic activity.
The ideal window is between 1:00 p.m. and 3:00 p.m.
This aligns with the body's natural afternoon energy dip. Napping later in the day may interfere with nighttime sleep, disrupting your normal sleep cycle.
Instead of staying in bed, spend a few minutes stretching or taking a short walk. Light physical activity helps your body transition from rest to activity and encourages your metabolism to become active again.
Current scientific evidence suggests that an afternoon nap is not inherently good or bad for weight loss. Its effects depend primarily on timing and duration.
A 20- to 30-minute nap taken in the early afternoon can reduce stress, improve alertness, support hormonal balance, and may even complement a healthy weight-management plan. However, long naps lasting more than 30 to 60 minutes, especially when taken regularly, are associated with higher BMI, an increased risk of metabolic syndrome, and a greater likelihood of obesity.
When combined with sufficient nighttime sleep, a balanced diet, and regular physical activity, a brief afternoon nap can be a healthy part of an overall wellness routine rather than an obstacle to reaching your weight-loss goals.
