Lactate threshold (LT2) is not a constant value and can be influenced by factors such as hydration and hematocrit changes.

“it's also a misconception to think that your your lt2 is always a constant value because this will be influenced by many factors we measure a concentration in the blood and blood uh or let's say not it's influenced by hydration and all things like this so for example if you have a change in hematocrit and we won't come into that but you can easily from the beginning of the session towards the end of the session see changes in hematocrit of more than 10% and this all where as you get dehydrated yes”