Which scenario is identified as a high-risk factor for rhabdomyolysis in CrossFit athletes?

• A. A novice with no training background
• B. The athletes with a reasonable baseline fitness from non-CrossFit training
• C. A CrossFit athlete who trains at very low intensity
• D. An athlete who only does cycling

Answer: (B)

The main idea is that rhabdomyolysis risk in CrossFit rises when someone starts or escalates high‑intensity, high‑volume workouts to which their body hasn’t been specifically conditioned. Having a reasonable level of fitness from activities outside CrossFit can create a trap: they may feel capable of handling typical CrossFit workouts and push toward RX intensity or rapid progression, but their muscles, tendons, and metabolic conditioning aren’t yet adapted to CrossFit’s unique movement patterns and the heavy eccentric loading involved. That mismatch can lead to excessive muscle damage and the release of muscle contents into the bloodstream, which is what rhabdomyolysis is.

In this scenario, the person’s non‑CrossFit baseline fitness means they might underestimate the demand or push too hard without proper progression or scaling, making them more vulnerable than someone with no training background who would naturally pace themselves and build up gradually. By contrast, workouts performed at very low intensity or focused on cycling without CrossFit’s specific stimulus typically do not provoke the same level of cross‑fit–specific muscle stress, and a complete beginner is often more cautious about intensity and progression.