Did you know teenagers actually need more sleep than adults?

If you’ve ever been told, ‘Why are you so lazy in the morning?’,  here’s some good news. It might not be laziness at all. It might be biology. 

Teenagers actually need eight to 10 hours of sleep every night. That’s more than most adults. While grown-ups can function (somehow) on six to seven hours, teenage brains and bodies are still developing rapidly. Sleep is the time when your brain organises memories, repairs cells, balances hormones, and literally helps you grow.

Yes! Even your height is connected to sleep. Growth hormone is mainly released at night. So staying up till 1 am scrolling reels isn’t just affecting your mood toggle; it could be affecting your physical growth too. 

Here’s something even more interesting: teenagers have a different biological clock than adults. During puberty, your body naturally shifts to a later sleep cycle. That means you don’t feel sleepy at 9:30 p.m. like you did as a child. Your brain is wired to feel alert at night and sleepy later in the morning.

Now imagine this: your biology says sleep at 11:30 pm, wake at 8:30 am But school says wake at 6 am.

That clash? It creates what scientists call sleep debt — and most teens are carrying it daily.

Lack of sleep doesn’t just make you yawn in class. It affects:

• Concentration and memory (yes, exam performance too)
  
• Mood swings and irritability
  
• Stress levels
  
• Sports performance
  
• Skin health
  

Ever noticed how everything feels more dramatic when you’re tired? That’s because the emotional part of your brain becomes more reactive when you’re sleep-deprived.

The tricky part? Phones make it worse. Blue light from screens delays melatonin — the hormone that tells your body it’s time to sleep. So that “just five more minutes” can easily turn into an extra hour.

“Sleep…..the free but invaluable and miraculous reward to us by our own system- a reset button.”During sleep, your body repairs tissues, regulates hormones, and consolidates memories.  It’s like a nightly system update. As a Biology teacher, I urge every person, every age group, especially school-going ones,  to prioritise 7-9 hours of sleep to support your body’s cellular repair, brain function, and overall well-being. Your biology depends on it!” shares Ms Pinky Mathur, Science teacher, Apeejay School, Noida.  

The solution isn’t unrealistic ‘sleep at 9 pm’ advice. It’s small changes:

• Reduce screen time 30–45 minutes before bed
  
• Keep a consistent sleep schedule
  
• Avoid heavy late-night snacking
  
• Try relaxing music instead of scrolling
  

So the next time someone says, ‘Why are you always tired?’ you can confidently reply: ‘Because my brain is still growing’!