英文關鍵字
legs
man
stand
treadmill
empty
gym
turn
begins
action
activity
adult
aerobic
athletic
back
boy
caucasian
class
club
equipment
european
exercise
fitness
foot
gymnasium
health
human
inside
jog
jogging
large
leisure
lifestyle
male
motion
one
people
practice
run
runner
running
shoes
speed
sport
stamina
track
training
wellness
white
workout