A new online puzzle challenges readers to test their visual acuity by finding a hidden mug of milk within a whimsical illustration of bugs engaged in arts and crafts. The challenge, designed to be both fun and mentally stimulating, highlights the benefits of optical illusions in improving focus and problem-solving skills. A new online puzzle challenges readers to test their visual acuity by finding a hidden mug of milk within a whimsical illustration of bugs engaged in arts and crafts. The challenge, designed to be both fun and mentally stimulating, highlights the benefits of optical illusions in improving focus and problem-solving skills. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle