How to Explain competition horse supplements to a Five-Year-Old

https://reduced-starch-horse-feed-uppt021.clearminster.com/posts/9-muscle-development-reasons-to-choose-hoveler-western-sport

Inside the 44 lb bag, inactivated brewer's yeast and biotin at 1,185 µg support the energy story for reining horses. Vitamin E sits at 260 mg per kg, while the bag lists at $37.99.