Increasing cardiorespiratory fitness levels is difficult for experienced athletes because a. they are not motivated to increase their levels of cardiorespiratory fitness
b. they cannot commit the training time to increase their cardiorespiratory fitness
c. they have already achieved high levels of cardiorespiratory fitness
d. none of the above

answer; 42pills or capsules; now if the person eats three meals a day then it would be 80 pills or capsules, and if the person only eats twice a day then it would be 56 pills or capsules; good luck

a. steroid--> influences moods in the limbic system

b. inhalant--> dissolves fatty tissue in the brain

c. marijuana--> changes how the hippocampus processes sensations