During glycolysis, the breakdown of glucose to pyruvate releases ATP and hydrogen ions, causing a burning sensation in muscles, not lactate itself.

“for example if you look at the glycolysis we are taking for example glucose which is C6 h206 and we are breaking that down into two uh two uh pids or basically C3 C3 H5 O3 but we got two of them now but in this process of releasing atps there at the same time what happens is also we are releasing hydrogen hydrogen ions and this is actually when you feel a burning sensation in your muscles this is actually it's not the lactate it's actually this that you are feeling in your muscles”