You can increase your brain power by solving these interesting optical illusions and brain teasers every day, as these are not just for entertainment people but can improve your cognitive abilities as well. But, mind you, the joy of solving them is not present at all. You can increase your brain power by solving these interesting optical illusions and brain teasers every day, as these are not just for entertainment people but can improve your cognitive abilities as well. But, mind you, the joy of solving them is not present at all. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle