Again, most people who are... like if you're using like a good vitamin b supplement
or you're eating a really well - rounded nutrient dense diet, you're probably getting enough vitamin b but you know, say like your
vegan or you're
vegetarian, sometimes there can be some vitamin b12 deficiencies there and if you're trying to train for speed simultaneously, you know, it's something to think about so those are some of my biggies and then finally the last thing is you're gonna be better at speed on any days where your sympathetic nervous system is really really
strong.