He mutters something about aerobic conditioning, muscle tone and serotonin levels.

This race requires decent speed, but a lack of natural quickness can be made up for with superior aerobic conditioning and supporting race tactics.

They use their aerobic conditioning, infiltration skills and excellent long-distance observation equipment and tactics to approach and observe the enemy.

Although exercising at lower intensities will improve aerobic conditioning, the most rapid gains are made when exercising close to an individual's anaerobic threshold.

Each class includes mindful movement guidance and somatic education; class cycles include warm-up, sustained non-impact aerobic conditioning, strength training, cool down and stretching.