- Many people wear smartwatches every day.
- These watches count your steps and heart rate.
- However, some numbers are only computer guesses.
- The watches use lights and movement to collect data.
- Simple numbers like steps are usually correct.
- Hard numbers like sleep stages are less accurate.
- Sweat and skin tone can change the results.
- You can watch your changes over many weeks.
- Do not worry about one strange number.
Difficult words
- smartwatch — a digital device you wear on your wristsmartwatches
- guess — an answer made without knowing all the factsguesses
- collect — to bring together information or different things
- accurate — correct, true, or exact in every detail
- strange — unusual or not normal and hard to explain
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you wear a smartwatch?
- Do you like to count your steps every day?
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