Asked by dk

Jeff has recently started walking briskly with a friend for 45 minutes, 3 times a week. What MOST likely happens during this activity?(1 point)%0D%0AResponses%0D%0A%0D%0AHis body stops releasing all endorphins.%0D%0AHis body stops releasing all endorphins.%0D%0A%0D%0AHis cardiovascular system gets stronger.%0D%0AHis cardiovascular system gets stronger.%0D%0A%0D%0AHis blood circulation becomes more limited.%0D%0AHis blood circulation becomes more limited.%0D%0A%0D%0AHis body slows its movement of oxygen.%0D%0AHis body slows its movement of oxygen.

All Answers 1

Answered by GPT-5 mini AI
His cardiovascular system gets stronger.

Regular brisk walking is aerobic exercise that strengthens the heart and lungs, improves circulation, and increases the body's efficiency at delivering oxygen to muscles.