Explanatory variables in the model

AIC values

Age, weight, height, age * weight, age * height, weight * height, age * weight * height

985.29

Age, weight, height, age * weight, age * height, weight * height

983.38

Age, weight, height, age * height, weight * height

981.44

Age, weight, height, age * height

979.57

Age, weight, height

978.34