> ## Content Index
> Fetch the complete content index at: https://www.lessonpills.com/llms.txt
> Use this file to discover other available public pages before exploring further.

# Sleep science: discussing cause and effect
- URL: https://www.lessonpills.com/caffeine-alcohol-affect-sleep/
- Published: 2026-06-30T01:50:19.000Z
- Updated: 2026-07-13T05:46:41.000Z
- Description: Sleep science — a B2 English lesson. Practise expressing cause and effect and expand vocabulary around health, caffeine, and alcohol.
- Author: Lessonpills
- Tags: B1, Lifestyle, Psychology, Video, Premium

## Summary

This 60-minute ESL lesson for **B2** learners explores **Sleep science: discussing cause and effect** through a real video. Across 6 interactive exercises, you'll develop listening comprehension, vocabulary, speaking skills — all built around authentic English content.

**What you'll practise:**

- **5 key vocabulary items** with definitions and usage notes

[![CTA Image](https://www.lessonpills.com/content/images/2026/07/icon128-2.png)](https://learn.lessonpills.com/caffeine-alcohol-affect-sleep?ref=lessonpills.com) 

Ready to practise? This interactive lesson includes vocabulary, grammar, and comprehension exercises — all based on real English content. 

[Start the lesson ](https://learn.lessonpills.com/caffeine-alcohol-affect-sleep?ref=lessonpills.com) 

## Lesson activities (6 exercises)

Each exercise builds on the previous one. Work through them in order for the best learning experience.

1. **Warm-up** — Discussion questions to activate what you already know about the topic.
2. **Watch** — Watch the video and note the main arguments and examples.
3. **Comprehension** — Answer questions to check your understanding of the main ideas and supporting details.
4. **Vocabulary** — Learn key words and expressions from the video, with definitions and usage notes.
5. **True / False** — Test your detailed understanding — decide if each statement matches the source.
6. **Discussion** — Reflect on the topic and share your opinions using the language you've learned.

## Vocabulary

This lesson introduces **5 key terms** drawn directly from the video:

- **To be wired** — to be unusually energetic, alert, or tense, often from consuming a stimulant like caffeine.
- **To wear off** — for the effects of something (like medicine, a drink, or a feeling) to gradually decrease and disappear.
- **To toss and turn** — to move around restlessly in bed because you are unable to sleep.
- **A light sleeper** — a person who is easily woken up by noise or other disturbances.
- **To knock someone out** — to cause someone to fall asleep very quickly and deeply.

## Grammar

This lesson includes a grammar focus with clear explanations and practice exercises.

[![CTA Image](https://www.lessonpills.com/content/images/2026/07/icon128-2.png)](https://learn.lessonpills.com/caffeine-alcohol-affect-sleep?ref=lessonpills.com) 

Ready to practise? This interactive lesson includes vocabulary, grammar, and comprehension exercises — all based on real English content. 

[Start the lesson ](https://learn.lessonpills.com/caffeine-alcohol-affect-sleep?ref=lessonpills.com)