What does "Rx" indicate in the context of a CrossFit workout?

"Rx" in the context of a CrossFit workout stands for "as prescribed." It indicates that the workout is performed according to the specific guidelines set by the coach or workout designer, typically including prescribed weights, movements, and rep schemes. When a workout is labeled as "Rx," it means that athletes are expected to complete the workout using the sets, repetitions, and weights as intended without any alterations.

This designation is important as it provides a benchmark for athletes to measure their performance against the standards established by the CrossFit methodology. It underscores the idea of challenging oneself appropriately, while also allowing for personal modifications as needed based on individual fitness levels.

The other options might suggest varying concepts related to intensity, style of exercises, or the need for modifications, but they do not accurately capture the specific meaning of "Rx" as it pertains directly to the prescribed nature of a workout.