endurance
endurance
stamina
stamina
triathlon
triathlon
sprint
sprint
Luke
Luke
treadmill
treadmill
workout
workout
warm-up
warm-up
racquetball
racquetball
exercise
exercise
stopwatch
stopwatch
fitness
fitness
athlete
athlete
stationary bike
stationary bike
handball
handball
stadium
stadium
John
John
equipment
equipment
gymnastics
gymnastics
cross-country
cross-country
muscle
muscle
weight training
weight training
muscular
muscular
perspiration
perspiration