英文關鍵字
adult
athletic
battle
body
boxer
boxing
break
cardio
caucasian
challenge
champion
club
coach
concentration
endurance
exercise
exercising
explain
fighter
fit
guy
gym
hit
instructor
kickboxing
male
man
martial
men
muscle
personal
preparation
professional
punch
ringside
slim
sport
sportsman
sportswear
strategy
strong
study
teach
technique
trainer
training
workout
young