Sport climber here. “Power Screaming” is a well- known technique to boost power during individual hard moves. Adam Ondra is famous for his strategic screaming, see his ascent of Silence. I regularly use it myself to increase core and grip strength.

To the practicing statisticians out there: Is BLUE at all relevant in the field? Even if you can formulate your data/problem as a linear regression, wouldn’t maximum likelihood estimation still be the preferred method in most scenarios? Edit: Of course Bayesian analysis is of equal relevance here!