im not sure which part of my pre race “cocktail” it is, but ever since i started doing this combo ive gotten a HUGE rush right before my race. i know i get very nervous for the couple hours before my race so i have that problem where i cant digest food, so i started doing it as just an energy source i could digest. my times are still improving up to the 300, but since my 55 is my concetration, im not worrying about the endurance part
if i do outdoor then i can experiment around and see how it affects my se in a 100, but endurance is a null factor in the 55