Most people start quite young, usually when they start kindergarten, although there are swimming classes for everyone of all ages! If you mean swimming lessons to practice swimming, you can probably start at any age. If you mean learning to float and stuff, probably when you are around 3 - 6
Hypoxic Ischemic Encephalopathy (HIE) is a condition occurs when the entire brain is deprived of an adequate oxygen supply, but the deprivation is not total.
To optimize the energy system for safe and improved performance, you must first use all three energy systems available in the body
First is for less strenuous workouts, the aerobic energy system. Next are the glycol energy system and lastly the ATP Energy system for heavy lifting and strenuous activities.