Horses and ponies should not receive less than 1.5% of their body weight on a dry matter basis as forage, this can come from grass, hay or short chop fibre.
The composition of diets for body builders should be 55-60% carbohydrate, 25-30% protein and 15-20% of fat, for both the off-season and pre-contest phases.
Most seaweed contains high levels of iodine, and a person may consume too much if they eat a lot of seaweed over an extended period. While many people can.