Kathy Lentz competed in her first triathlon at age 68.
When she decided to do it, Lentz hadn't run, biked or swum in decades. She hadn't even been working out — too busy with her job. But after she retired, she started training.
One night as she left to train, her husband asked if she really wanted to go. No, Lentz admitted, she did not.
"But I also knew, because I've been through things, that it gets better and you have to push yourself through that fear, through that uncomfortableness," said Lentz, now 69 and a resident of Stacy, Minn. "My end goal was to be able to do this triathlon. I had to work through the uncomfortableness knowing it would get better."
Lentz had stepped out of her comfort zone.
"Comfort zone" is the psychological state of low stress and low anxiety that people feel when occupying familiar environments, performing familiar activities. It might sound like a pop-psychology catchphrase, but the idea that emerging from a comfort zone can be beneficial has been around a lot longer. In a 1908 study, Harvard researchers found that mice performed best when experiencing mild — but not overwhelming — stress. Neuroscientists have found that the brain learns best when stress hormones are mildly elevated.
Lentz has long enjoyed taking on stressful challenges. She enrolled in college at age 41, white-water rafted and cliff climbed at 50, earned a master's degree at 57 and sky-dived at 63. She repeated the YWCA Women's Triathlon at 69 and plans to do it again at 70.
"I've become a much more positive person by doing the things I'm afraid of," she said. Each accomplishment has boosted her confidence, as if by successfully leaving her comfort zone she extended its boundaries.