Sleep Hygiene
Feb 05, 2026 Dhileep

Is Your Afternoon Nap Making You Fat?

In the tech world, "Power Naps" are celebrated as a productivity hack. We have sleeping pods in offices and bean bags in break rooms. But have you noticed that after a nap, you often feel groggy, heavy, or stiff?

Ancient Siddha texts predicted this 2,000 years ago. They warned that unless you are a manual laborer or very elderly, daytime sleep (Pagal Kan Thuyil) is a recipe for disaster.

"பகலில் தூங்கினால் உடம்பில் ஒரு வழுவழுப்பான எண்ணெய் பசை போன்று வெளிப்பட்டு உடம்பின் கட்டுக் குலைகிறது. மந்தம் ஏற்படுகிறது."

— Ancient Siddha Palm Leaf Text

Translation: "If you sleep during the day, an oily, greasy substance manifests in the body, loosening the body's structure. Lethargy (Mantham) sets in."

The "Grease" Effect

Siddha medicine views the body as a machine. When you sleep during the day (especially after lunch), your metabolic fire (Agni) drops. The food you ate doesn't digest; instead, it turns into Kapha—a cold, heavy, mucus-like energy.

This is why you feel:

  • Oily skin and scalp (as mentioned in the text).
  • Stiffness in joints (Vatha aggravation).
  • Brain Fog: The text specifically mentions "Mantham" (dullness of intellect).

The Only Exception: Summer Months

Interestingly, the text provides a specific "bug fix" for this rule. It states that during the months of Aani and Aadi (Mid-June to Mid-August), you are allowed to nap.

Why? Because the intense heat dries out the body, and the nights are shorter. During this season, a short nap helps retain moisture and energy. In all other seasons, keep your eyes open!

🌿 Action Plan for Techies

Feeling sleepy at 3:00 PM? Do not lay down. Instead, splash cold water on your face and walk for 5 minutes. This activates "Vyanan" (circulation) and burns off the lethargy without causing internal "greasiness."