Which technique is NOT effective for reducing a diver’s energy expenditure?

The technique that is not effective for reducing a diver’s energy expenditure is constantly adjusting buoyancy. Maintaining a stable buoyancy is crucial for energy conservation while diving. When divers frequently adjust their buoyancy, they consume more energy because it requires constant movement and effort to change body position or depth.

In contrast, moving efficiently through water minimizes resistance and allows a diver to glide, conserving energy. Monitoring breath control is also important, as proper breathing techniques help in managing lung volumes and buoyancy without excessive effort. Reducing anxiety levels can contribute to a more relaxed diving experience, which directly correlates to energy use, as a calm diver is less likely to expend energy through unnecessary movement or tension.