Here are the links Guruji mentioned in the video. Just click on them to visit these links. Blue Blocking Amber Glasses Over the spectacles Blue Blockers Book interview with Yuvraj for the 64-Day Challenge. Testimonials of our students April 64-Day Yoga Challenge Batch 1 Batch 1 starts on the 5th of April. Admission for Batch 1 closes on the 2nd of April. April 64-Day Yoga Challenge Batch 2 Batch 2 starts on the 14th of April. Admission for Batch 2 closes on the 11th of April.