Hearts have been racing in Love Island's iconic heart rate challenge tonight.The famous challenge, which features in every season of Love Island, sees the Islanders flaunt their stuff in raunchy outfits and give their fellow co-stars a lap dance.The aim of the game is to see who's heart rate rises the most; the girls or the boys. In tonight's episode of Love Island season 10, we saw Catherine Taylor drop her cape, Ella Thomas twerk in diamantés, and Mal Nichols dance in leopard print. But the one dance that got the girls dramatically blocking their vision was Sammy Root in his tiny gold shorts.