For beginner exercisers, mirrors can be daunting," she said.
Martin Ginis suggested gyms provide areas without mirrors to encourage novice exercisers."Women don't need to exercise in a gym," she said. There are other ways to get your exercise. 散步30分钟或徒步旅行也不错

单词提示：
daunting adj. 令人畏惧的； novice n. 初学者

答案：Thirty minutes of walking, or hiking is good too.
本句节选自《Mirrors tarnish women's image ?》

总结：
1. 单词 hiking 就是徒步旅行的意思，当然 travelling on foot 的说法也是正确的。
2. “也不错”的表达，可以说成：
It's good (or fine)
a good idea ( or choice)
题目很简单，关键是表达的时候要选择比较地道的说法。