Just before the fly lands on the barbells, Goofy's eyes are flesh-colored for a moment.
As the fly crosses the barbell, it first nears Goofy's left hand; but in the close-up shot that follows, the fly hops over the right hand.
When Goofy takes the record disc, runs toward the record player, and trips over the barbell, both his feet are lying over the barbell and his caveman-like cloak falls forward showing his blue shorts he wears underneath. However, after the record disc lands on the record player, Goofy's cloak is covering his bottom again and his left foot is positioned in front of him. Furthermore, the barbell disappears and moves itself a few feet further away from Goofy.
While wearing his gym suit, Goofy always wears an orange hat with it. When Goofy has his hands and feet trapped in the barbell and rolls forward on it, he still wears the hat even as his caveman-like cloak falls over his head. Yet, while the cloak covers Goofy's head the hat does not bulge out. Also, when Goofy shakes the cloak off his head, the cloak briefly flies up showing Goofy wearing not hat as if it came off. However, when Goofy falls and flips off the board, he is wearing his hat again.
While dressed in his yellow caveman-like cloak for gym work, Goofy constantly wears an orange hat with it. He even wears the hat when his hands and feet get trapped in the barbells and he struggles to lift the weights. When Goofy rolls forward on the barbell and the cloak falls over his head, the cloak also covers the hat. However, while seeing Goofy head covered by the cloak, the hat does not bulge through it when it should. Furthermore, when Goofy shakes the cloak off his head while still rolling on the barbell, the hat is gone. When Goofy falls off the board and finally holds the barbell over his head, he is wearing his hat again.
When Goofy's feet are trapped in the barbells, his toes and socks remain sticking out. Yet, when Goofy rolls on the barbells, his toes and socks in-explicitly slid into the barbells.