For a typical person undergoing a VO2 max test, it is advisable to eat similarly before each test, ensure adequate hydration, and get sufficient sleep.

“so on the day of the test itself I would I would one is important timing of the day this is important to try to keep somewhat consistent I would say because of the Circadian rhythm you know that for example your your uh temperature levels in your body this fluctuates this is maybe one of the easiest observable differences in a human basically as a call it as an indirect measure of the Circadian rhythm where we basically see that you have a minimum point that happens typically in the morning just before you wake up and then you have a maximum Point typical in the afternoon and there is of course plenty of research suggesting that aerobic exercises are best done normally a little bit in the afternoon when you”

“standardizing what you do the days before and all these kind of things I think this is Impractical for most people like if if this is a very important metric for you like the like one of the key metrics you use in order to understand how have the previous period influence you and you're looking for marginal changes then then it becomes very important also how you standardize the days before”

“for a normal person I would say that I would uh keep a standardized protocol for how so I would come in there let's say at least trying to eat pretty much the same uh every time I go there and that means uh that means making sure you are well fueled as if you were going to do a important training session that means normally more carbohydrates make sure you well hydrated and obviously also that you are um to the extent you can influence it or you can you should be able to influence it but make sure that you also had a proper sleep so you don't come in like completely tired or things like this reasonably well rested”