In theory, being the manager of a baseball team may be one of the safest jobs on the diamond. They amble out of the dugout during a break in the action, slowly make their way either to the pitcher or the umpire, and head back to the dugout. Only when there is some sort of bench clearing altercation are they really in any sort of danger of actual movement, and even those instances are few and far between.
Yes, being a manager is a safe occupation for one physically, unless they happen to be Kevin Cash and the Tampa Bay Rays.