The most important thing the Penguins can do during the final four weeks of the regular season involves a variable over which they have little control.
Stay healthy.
Trouble is, they can't do anything to prevent pucks from being deflected into cheekbones. Or skates from hitting a rut in the ice, sending the unfortunate soul wearing them hurtling. Or a shoulder from being separated when a player is checked hard into the boards.
Or, for that matter, any of the other hazards inherent in playing a game in which competitors operate at high speed, occasionally with malice aforethought.