Lactic acid is the low-strength ... “In recent years, it has been proven to help dislodge and remove the keratin plugs from the hair follicles for anyone who has keratosis pilaris (also often ...

The amount of oxygen required to remove the lactic acid, and replace the body's reserves of oxygen, is called the oxygen debt. When someone who has been exercising pays back an oxygen debt ...

So you been sprinting, Lily? Just a bit of cramp? So that's the lactic acid building up. When an athlete does too much or runs too vigorously, not enough oxygen can be delivered to the muscles.