Evidence check: Magnesium in the context of Sport

The provided context lacks direct evidence on magnesium in sports. Generally, magnesium supports muscle function, energy metabolism, and electrolyte balance, but the evidence for ergogenic effects from supplementation is mixed. For well-nourished athletes, extra magnesium rarely improves performance; deficiency may impair recovery. Without specific studies in the context, the evidence grade is 'mixed'. Consumers should rely on balanced nutrition rather than unsubstantiated product claims.