My entire family has an extremely high metabolism, including my daugher who runs the 800m and mile. After several PRs, she had a delayed late night track meet that seemed to throw off her entire system. There was no place to eat at this venue and she went 4 hours without food before running. For obvious reasons, she ran a slow race. Restaurants were closed early due to Covid so she probablhy went 6 hours without a meal and ate a small amount of fast food before bed. The next day she had another big invite race. She started out way ahead and, after the second lap, slowed way down. She was dizzy at the end and had blurred vision. She laid down for 20 minutes and completely recovered fairly quickly. She had a week with normal eating, but a a pretty intense workout week. Her next 800m race was slow and she again felt dizzy at the end. She took about 40 minutes to recover and was still mopey. We decided to take her in immediately to get tested and remove her from track. She had a previous echocardiogram and halter monitor for a sports related dizzy spell 3 months prior. Those tests did not show anything unsual. She was well hydrated before the race, but the bloodwork and urine showed signs of dyhydraton. She had some keotones in her urine and her blood sugar was 69. Stress test was normal but showed that her heart rate recovered fairly quickly (possibly a little too quickly). After meeting with several doctors, our current conclusion is that she did not recover fuel-wise from the delayed meet and, due to her high metabolism could not catch up during the heavy practice week (the reason for the low blood sugar). The drop in heart rate after running may have also contributed, but we are waiting for the results. She has been eating well- heavy protein and carbs. The doctor recommended taking a Gu gel before her races (800m and 1600m). Salt/sodium may also be a factor due to the pre-race hydration and post-race dehydration. After researching Gu, it seems to be geared towards marathon runners. Any recomendation on what type of gel we shoud take and how long before the race? We want to avoid caffine. Any recommendations on optimally hydrating before the race? It is difficult to get her to drink enough water on a daily basis. Thank you.