RED-S stands for relative energy deficiency in sport, and refers to “impaired physiological functioning caused by relative energy deficiency, and includes but is not limited to impairments of metabolic rate, menstrual function, bone health, immunity, protein synthesis, and cardiovascular health.” (Mountjoy et al., 2014). RED-S is more common in females, but is certainly not exclusively seen in this population. It tends to affect endurance athletes, physique athletes, weight c