Second energy system Lactic

Lactic acid system. It's called that because it is a byproduct because . It's called glycolysis this is the break down of glucose. The time it lasts is 10-60 seconds. Glucoses stored as glycogen in muscles then creates 2 ATP molecule created and it is called anerobic because of the lack of oxygen when using this system. When you do activities you can see when you change systems because you becomes slower because it takes longer to create an ATP for energy. The byproduct of  this is lactic acid this is not good because the pain becomes the limiter of the body an takes longer because it needs to be pumped around the body because it is a poison to the body and is to slow down the body so that it can change energy systems.

The number of ATP molecule created are 2.

The sports that used that is:
400 meters

1 min push ups
batminton