Even a seasoned Mexican chef like Jose Medina knows that his native country’s cuisine can sometimes be heavy and overwhelming. Born in Mexico City, and inspired by his father’s and grandfather’s authentic home cooking, he went on to train professionally at Hacienda de Los Morales and Les Celebrites, in Mexico City’s Hotel Nikko. Now, as chef and owner of Toloache restaurants in New York City and Tacuba in Astoria, Queens, he makes sure to use fresh ingredients and offer a variety of healthy options (while also leading a healthy lifestyle even when he’s not in . . .