Danny Crescenti has taught math and PE for 13 years at IB and American international schools in Spain, South Korea, Malawi, California, and Malaysia. He holds a master's in physical education, health, and coaching, and heads the PHE department at Mont'Kiara International School, where he teaches grades 3 to 10. His focus is PE that does two jobs at once: kids move hard for as much of the lesson as possible, and they leave with the real skills and knowledge to lead active lives. Outside school he rides every kind of bike he can find, trains for kettlebell sport, coaches strength and conditioning, and reads sci-fi and fantasy.