Mt Whitney Zone Forums General Discussion Getting in Shape, Training for Whitney 2012 - Ideas, input?

all I ever do is walk up and down the 70 ft hill in front of my house. Typically ten laps 3 times a week. No pushups, no situps. no biking, no gawdawful gym stuff. Age 60. Just go and your pace at forget about the clock. Tortoise and the hare has worked for 4 times on Whitney and a bunch of others, dayhiking, backpacking, scrambling, etc,