Question

Athletes are often trained at high altitude because 

(A) training at high altitude increases muscle mass 

(B) training at high altitude increases the number of red blood cells 

(C) there is less chance of an injury at high altitude 

(D) athletes sweat less at high altitude 

Answer 1

Correct option (B) training at high altitude increases the number of red blood cells

Explanation:

At high altitude less dense [O₂ deficient] air is present. So RBCs count is increased