sentence: There are two men standing in an indoor gym wearing gray athletic shirts and black and red shorts. sentence:  They are demonstrating and talking about workout routines. sentence:  The man in the red shorts is raising his right hand up to show a stretching exercise move while the other person is watching him. sentence:  He continues to show some more workout exercises by flexing his chest muscles and and pointing to his thigh. sentence:  Then the other person in black shorts kneels down on his left knee and holds up a long metal pole with his hands to raise it. sentence:  The person in the red short explains what core muscles he is exercising while doing the workout. sentence:  Then they both stand up and complete their tutorial on the workout.