When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.  Having read the above passage, choose the right answer to the following question (choices are more blood or less blood? ):   Compared to an obese person who has never exercised, would an Olympic sprinter in perfect condition be more likely to have a heart that can, with each beat, move more blood or less blood??
more blood