Bodybuilder trainer doing Scott barbell bicep curl in slow motion at fitness center - medium shot, slow motion

man athlete barbell bicep curl bodybuilder arm workout biceps gym fit vivid modern slow motion fitness flexing curls concentration determination effort exercise expression motivation muscle muscular training strength strong dedication male sport caucasian masculinity lifting athletic extension club endurance barbell bicep curls scott one train arm day arms trainer fintess center big arms slow 30th big