 Tune in every Monday on KNOX from 9 to 9.30 to listen to Dr. Chalaya with the Heart Institute of North Dakota. Text KNOX or call with your questions regarding your health with Dr. Chalaya every Monday from 9 to 9.30. You love your grandma, so why would you let her walk on an uneven sidewalk? Uh, whoops! Oh my, I think I see the light. If concrete has you tripping, get even with it.