Houston Chronicle (Internet / Print) 07/20/06 Their eyes locked and their bodies in synch, Dr. Martin L. Nusynowitz and his wife, Susan, are poetry in motion as they move to the sultry sounds of Argentine tango. The Clear Lake couple got "hooked" during a trip to Buenos Aires in 1990, and they haven't stopped dancing since. Every week, they kick up their heels with other members of the Clear Lake Tango Association. "People ask me, 'Why are you still taking lessons?' " said Martin Nusynowitz, 72, a professor of radiology at the University of Texas Medical Branch at Galveston. "It's a constant challenge — physically, mentally and emotionally. It hooks you in every way because you have to know what to do." His wife agreed. "It exercises your mind as well as your body," said Susan Nusynowitz, a retired educator. "It's very intense, it's romantic and it's captivating. The rhythm can be lulling and gentle, and then it's pulsating."