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Why are some illnesses such as the common cold worse after waking up before improving throughout the day?

Dr. Aris Thorne
Dr. Aris Thorne
Senior Science Editor · Feb 23, 2026 · Updated Apr 13, 2026

Your body produces more of its own steroids (cortisol) during daylight hours and levels reduce as the sun goes down. It’s why our kids are too sick for school in the morning but by lunch are amping to go play, and you’re sure they’re going to school the next day. Then their fever returns after di…

60
Words

1 min
Read Time

#267
of 500 in Science

-17%
vs Category Avg

The Short Answer

Your body produces more of its own steroids (cortisol) during daylight hours and levels reduce as the sun goes down. It’s why our kids are too sick for school in the morning but by lunch are amping to go play, and you’re sure they’re going to school the next day. Then their fever returns after dinner – 😤

Analysis

Key Concepts: School, body, produces

This explanation focuses on school, body, produces and spans 60 words across 3 sentences. The depth is typical for Science questions (category average: 72 words), striking a balance between accessibility and completeness.

What This Answer Covers

The explanation opens with: “Your body produces more of its own steroids (cortisol) during daylight hours and levels reduce as the sun goes down.” It then elaborates by presenting a contrasting perspective, ultimately building toward a complete picture across 3 connected points.

How This Compares in Science

Ranked #267 of 500 Science questions by answer depth (top 54%). This is in the concise tier — a focused explanation that prioritizes clarity over exhaustiveness. Many readers prefer this level of directness.

Frequently Asked Questions

Is there a simple explanation for why some illnesses such as the common cold worse after waking up before improving throughout the day?

Your body produces more of its own steroids (cortisol) during daylight hours and levels reduce as the sun goes down. It’s why our kids are too sick for school in the morning but by lunch are amping to go play, and you’re sure they’re going to school…

How detailed is this explanation compared to similar Science questions?

This is a focused answer at 60 words, ranked #267 of 500 Science questions by depth. The key concepts covered are school, body, produces.

What approach does this answer take to explain some illnesses such as the common cold worse after waking up?

The explanation uses contrasting perspectives across 60 words. It is categorized under Science and addresses the question through 1 analytical lens.