Your fueling strategy could be the difference between a PR and a DNF
Your race-day fueling strategy might make the difference between getting a PR or not. With over 13 miles to run, your body is going to need additional fuel to help spare your glycogen stores, so you don’t bonk. Bonking occurs when glycogen stores (i.e. fuel tanks) are so low that the body suffers from nausea, dizziness, and a lack of power. It is common among endurance athletes, and avoiding the bonk is actually the reason we created the first Energy Gel back in 1993! Because our bodies use glucose as fuel during endurance exercise, we need to replace a significant amount of our calories with carbohydrates (anywhere between 30-90 grams per hour).