Activity for Robert Durieux‭

Type	On...	Excerpt	Status	Date
Answer	—	A: Training to prepare for oxygen deficiency in the high mountains I thought that a sportsman has more red blood cells because his body needs more oxygen during peak performance. Working out uses up oxygen, and breathing hard is required to get more oxygen into your body. This demand for oxygen stimulates red blood cell production, and lowers the age of red blood ce... (more)	—	over 9 years ago