In Reply to: pyruvate (calcium) posted by jim on March 21, 19101 at 19:53:44:
As you use up ATP for fuel, it produces two types of byproducts to be converted back into fuel. If you are above anaerobic threshold (sprinting), it becomes lactic acid, slow to convert. If you are below anaerobic threshold (jogging), it becomes pyruvate. This is why you can recover more quickly from a lower level of effort than from a more intense one.
Pyruvate adds in more of the fuel that you can use at levels of effort below anaerobic threshold.
This is best used during long workouts or in exercises such as running, cycling, or swimming.