The article introduces a brainteaser that challenges readers to spot hidden lemons among yellow birds within 10 seconds. It underscores the cognitive benefits of engaging with optical illusions and puzzles, such as enhanced mental sharpness, problem-solving abilities, and memory improvement. The piece encourages readers to continue challenging their brains for long-term benefits. The article introduces a brainteaser that challenges readers to spot hidden lemons among yellow birds within 10 seconds. It underscores the cognitive benefits of engaging with optical illusions and puzzles, such as enhanced mental sharpness, problem-solving abilities, and memory improvement. The piece encourages readers to continue challenging their brains for long-term benefits. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle