Brain teasers are fun puzzles that challenge cognitive abilities in various ways. One such brain teaser involves finding a hidden dog in a picture within five seconds, testing one’s observation skills. These exercises not only entertain but also sharpen mental acuity, making them a valuable activity for all ages. Brain teasers are fun puzzles that challenge cognitive abilities in various ways. One such brain teaser involves finding a hidden dog in a picture within five seconds, testing one’s observation skills. These exercises not only entertain but also sharpen mental acuity, making them a valuable activity for all ages. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle