Here are some tips from my staff for Shavuos night learning:
Ahuva- *Make an iced green tea or have a Vitamin Water Zero, and sip it throughout the night.
*Cut up veggies and leave them close by so you can pick at them when you feel hungry.
Sarit- *Stay far away from the junk food that’s given out and have cut-up fruits and vegetables near you
*If you feel like you need candy, have a Fruit-A-Peel pack.
*Sugar-free candies, or mints in moderation
Maya- *Keep your hands busy with things, not food. Use one had to hold the book and the other to skim line by line. Or have a fidget spinner in one hand to keep it busy while still learning.
*Popcorn, but portion it out and eat them individually so you’re not having handfuls at a time.