Studies Explore the Flu, Multiple Sclerosis and Benefits of Yoga

A new study reveals just how far the flu spreads, and finds that people with the flu could still be emitting virus particles into the air up to six feet around them. Another study shows there may be a connection between obesity and multiple sclerosis, and that yoga may help those with irregular heartbeats. Dr. Bruce Hensel reports for the NBC4 News at 5 p.m. on Jan. 31, 2013.