# The surprising reason our muscles get tired

- Institution: TED
- Department: TED-Ed
- Speaker: Christian Moro
- Year: 2019
- Level: For everyone
- Language: English
- Subjects: Biology, Medicine and health
- Source: [TED](https://www.ted.com/talks/christian_moro_the_surprising_reason_our_muscles_get_tired)
- Licence: [CC BY-NC-ND 4.0](https://creativecommons.org/licenses/by-nc-nd/4.0/) (Non-commercial use only, and no changed versions.)
- Who can watch: Teens profiles and older (sources give no ratings; placed by Invisible Network from the source's own words)

You're lifting weights. The first time feels easy, but each lift takes more and more effort until you can't continue. Inside your arms, the muscles responsible for the lifting have become unable to contract. What's going on? Christian Moro explains how exactly our muscles operate, and what causes them to become fatigued. \[Directed by Nichola Latzgo, narrated by Addison Anderson\].

## Lectures

1. [The surprising reason our muscles get tired](https://invisiblenetwork.ai/learn/ted/christian_moro_the_surprising_reason_our_muscles_get_tired/f44cb0b4fd2a), 5 min (TED's player)