The concentration of blood lactate is usually 1 -- 2 mM at rest .
The concentration of blood lactate can rise to over 20 mM during intense exertion and as high as 25 mM afterward .
The concentration of blood lactate is usually 1 -- 2 mM at rest , but can rise to over 20 mM during intense exertion and as high as 25 mM afterward .