My "prep" usually begins the day before. I start with a smoothie (berries, sweet potatoes, yogurt, chia seeds, etc.). Chia seeds are especially helpful because they swell and help collect stool. But basically you want to get as much natural fiber as possible. Plus the natural sugars from the fruits help with energy. For my meals I stick to fish, veggies, rice etc. Maybe one more smoothie at night if I'm being glutinous. The morning-of, I'll have one last smoothie and maybe a pb&j or something light. I do want to stress that 9/10 you DON'T need supplements if you are conscious about what you're eating and how your body responds to certain foods. You can't eat a burger and then take Pure or Metamucil and expect magic. Okay back to the plot. I give my body about 4-6 hours to do it's thing and then I prep. I rarely feel like I don't have enough energy but if I need a quick boost, then usually nuts or peanut butter are my go to. Hope this helps someone 🙂