How can I make my own pre-workout supplement at home?

To make your own pre-workout supplement at home, you can combine ingredients like caffeine, beta-alanine, creatine, and citrulline malate in specific ratiOS. It's important to research the proper dosages and potential side effects of each ingredient before mixing them together. Additionally, consult with a healthcare professional before starting any new supplement regimen to ensure it is safe for you.