機器
三頭筋
active
african
american
arm
athlete
attractive
back
barbell
biceps
body
bodybuilding
club
coach
core
determination
difficult
doing
down
dumbbell
effort
endurance
energy
equipment
exercises
fitness
gym
healthy
horizontal
male
man
muscle
muscular
person
physical
pull
ripped
shirtless
shoulder
simulator
sport
strength
strong
thrust
torso
training
weight
working out
workout