Option 2:

How does Sven Holmberg train endurance? Treadmills of course. You start off at a walking pace, and start to carry a 50 pound bag of potatoes. It has to be potatoes, any other object will not do. After a minute carrying the 50 pound bag at a walking pace, the treadmill speed is increased to a light jog. As Sven jogs, he starts to take out individual potatoes and take a small bite from each one. After taking a bite, he proceeds to toss the potato over his left shoulder. It has to be over the left shoulder, as it is important to build proper endurance for hockey. Once his legs give out, the treadmill is turned off. He then lays on the ground for 47 minutes while humming the tune to WAP. After that he sits up, and starts to do mental sit ups. By that he just visualizes himself doing situps but doesn't actually do anything.