Como funciona o sono assimétrico em animais e humanos
B2 Portuguese listening practice · Brazilian Portuguese · Curated for upper-intermediate learners
About this clip
A 5:12 video in Portuguese at B2 level, suitable for upper-intermediate learners. The speech is at a natural pace around 156 words per minute, rated 4.1/5, medium listening difficulty by Reelang’s algorithm.
What this clip covers:
- ▸Science - Discoveries, experiments, and how the world works.
- ▸Health & Wellness - Fitness, mental health, nutrition, sleep, and self-care.
- ▸Self-Improvement - Life advice, habits, motivation, and personal growth.
From Seja curioso — TED-Ed↗ on YouTube.Watch original
Vocabulary frequency
How common is the vocabulary in this B2 Portuguese listening practice listening practice?
82.5%
of words are in the top 2,000 most common Portuguese words
Based on this reel’s transcript, most of the vocabulary is high-frequency, everyday Portuguese.
General Portuguese frequency
77.3%
Top 1,000
82.5%
Top 2,000
96.1%
Top 5,000
Spoken Portuguese frequency
85.1%
Top 1,000
97.3%
Top 2,000
100%
Top 5,000
👄 Conversational vocabulary
This reel’s words appear more often in subtitle-based spoken-Portuguese data than in general usage, so it may feel closer to everyday conversation.
Words above this video’s level
Quick glosses for vocabulary that goes beyond this video’s B2 level.
assimétrico
7×
Rare / outside top 5,000
asymmetric
hemisférios
6×
Rare / outside top 5,000
hemispheres
fragatas
2×
Rare / outside top 5,000
frigate birds
unihemisférico
2×
Rare / outside top 5,000
unihemispheric
acordadas
1×
Rare / outside top 5,000
awake
sono assimétrico
1×
sleep pattern with different brain activity
Source: wordfreq 3.1.1 (general) · SUBTLEX-PT-BR 2012 (spoken). Buckets approximate; exact ranks not stored.
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