A challenging optical illusion has people searching for three Olympic medals hidden among athletes. Even the experts took 52 seconds to spot them. Those with sharp eyes can find the medals. Observers are encouraged to take the challenge and test their observation skills. A challenging optical illusion has people searching for three Olympic medals hidden among athletes. Even the experts took 52 seconds to spot them. Those with sharp eyes can find the medals. Observers are encouraged to take the challenge and test their observation skills. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle