'Living While Dying' episode 3: Growing fatigue

Bruce Kramer works on a pose
Bruce Kramer, with help from his son John Kramer, works on a pose during an adaptive yoga class Monday, March 11, 2013 at the Courage Center.
Jennifer Simonson | MPR News

Bruce Kramer knew that ALS was going to slowly and insidiously steal much of his body's abilities.

That's what it does, and the time in which it takes the disease to claim its victims varies.