Definition
Euphemistic slang for menstruation, particularly relevant when discussing how hormonal fluctuations affect training performance and recovery. Not to be confused with the Discovery Channel programming event that also makes people feel crummy.
Example Usage
I'm hitting PRs next week, but shark week starts today so my strength might be all over the place.
Origin
Coined in fitness communities as a playful alternative to clinical terminology, borrowing from the popular TV event to describe a week of unwelcome visitors.
Fun Fact
Research shows that training during the follicular phase (post-shark week) may optimize strength gains due to higher testosterone-to-estrogen ratios.
Source: Women's fitness community slang
Related Terms
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See “shark week” in Corporate Speak, Gen-Z Slang, Pirate Speak, and more.
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