work hard, eat well - View this location on map after working out in the mountains, and breathing at boulder's 5,430-foot elevation, it's not unusual for a newcomer to feel like a heavy bag that has been worked over by a prizefighter. settle in for a leisurely dinner at john's (303-444-5232). the brother-sister team of corey buck and ashley maxwell bought the place from original chef-owners john and nancy bizzarro in december. mr. bizzarro still occasionally lends a hand in the kitchen of this intimate, 60-seat restaurant. classic entrees are sometimes given a modern spin, as with the postmodern cassoulet of duck with ribbons of napa cabbage surrounded by a smoky white bean sauce and topped with herbed duck crispings ($25). New York Times 2328 pearl street, Boulder, CO Restaurant

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