For three days a week, Wayne Garcia has been taking part in a nontraditional exercise.
He starts by putting on virtual reality (VR) equipment on his head. He then gets on a specially designed exercise bicycle and starts pushing its pedals. Faster and faster he goes.
Garcia is taking part in a study at the University of Southern California's Keck School of Medicine. Researchers want to see if just a small amount of VR can help prevent memory loss as people age.
Garcia says he remembers how his parents and grandparents all suffered from dementia.
It's very scary that one day that could be me.
Garcia recalls his father once reading a newspaper upside down and almost setting the house on fire by putting a towel on a heater.
Just the sadness — you remember what your dad was like, what your mom was like when they were all good, and then the decline now. And now you're taking care of them rather than when they used to take care of you.
Garcia is taking part in the study to see if using virtual reality at the same time as physical exercise can help prevent dementia in the future.
Judy Pa is part of the team of researchers leading the study. She says the actual definition of dementia is when a person is no longer able to take care of themselves, things like paying the bills, driving, cooking for themselves, dressing themselves.
She added that the break down and death of cells in the nervous system take 10 to 20 years.
Pa said that unlike usual games, VR provides a first-person, three-dimensional experience that is important to memory training.
Garcia is hopeful for what VR might mean for the future.
There might be a place where you could go, and you can get your daily dose of virtual reality and cardio to keep the mind going.
I'm Jonathan Evans.
1.take part in 参加，参与
Join one of our craft classes. Then you can take part in these very enjoyable hobbies.
2.be able to do sth 有能力做某事
But, not everyone was able to go.
韦恩要先带上虚拟现实（VR）设备在头上 。然后，他会骑上经过特别设计的锻炼自行车，开始蹬脚蹬，越骑越快 。
韦恩正在参加南加利福尼亚大学凯克医学院的一项研究 。研究人员想知道，借助少量VR是否可以助力预防随着年龄增长而出现的健忘 。
还有那种悲伤感——你记得自己父亲母亲一切都好时的样子，但现在他们盛年不再 。现在的你要照顾他们，他们没法再照顾你了 。
朱迪是该研究的牵头人之一 。她表示，“痴呆”实际上的定义是：某个人已经不再具备照顾自己的能力，比如无法再付款、开车、自己做饭、自己穿衣服 。
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