Bosco Wong and Risa Takimoto, a member of the Japanese 8 girl group Model Girls, were shooting a commercial for a Japanese beverage product.
According to a Tvbnewsworld article, Bosco wore an unbuttoned white dress shirt and showed off his muscular body.
He said: "When I learned I became the spokesperson for a healthy beverage, I started getting nervous because I had to show my muscles and figure, so I spent some time cutting back on my diet, eating light and exercising more. I hoped to be in the best state for the shoot."
Before shooting, Bosco did over a hundred sit-ups to help make his muscles even more distinct. Many of the female staff at the studio couldn't help but take a peek at Bosco.