Those who joined local armies often brought with them knowledge of how to handle firearms—a new yet devastatingly effective technology introduced to the subcontinent in the 16th century. But they also had to master new bodily techniques: enduring military manoeuvres in the heat and moving efficiently through intimidating terrain such as the rocky highlands of the Deccan, the parched deserts of Rajasthan, or the Ghats of south India. Migrant warrior sailors in Kerala, such as the Malaccan slave Chinali, who joined a rogue Malabari navy and became the scourge of the Portuguese, may have developed sea legs before coming to India. But in their new subcontinental locations, they also had to adapt their bodily reflexes to tropical cyclones, Arabian Sea currents, and the predations of mosquitoes. Foreigners who joined communities of itinerants in Ajmer or Delhi, such as the English eccentric Thomas Coryate, had to train their bodies to perform rituals of prostration, to be satisfied with a meagre diet of rice and dal, and to endure extremes of weather in little or no clothing. And foreign women living in Mughal harems, such as the Armenian Bibi Juliana Firangi and the Portuguese slave-turned-courtier Julenna Dias da Costa, were expected to acquire an ensemble of new bodily techniques—dancing, singing, wearing robes, becoming human chess pieces, even bearing weapons, depending upon their rank and vocation.