This is the 6367th most frequent Russian word.
ходьбы
The Russian word "ходьбы" means "walking" in English.
Here, 'ходьбы' functions as a noun in the genitive case to describe the benefits of the activity of walking.
Польза ходьбы для здоровья очевидна.
The benefits of walking for health are evident.
In this sentence, 'ходьбы' indicates the activity that lasts for a certain duration, showing its role as a genitive noun to specify the type of activity being discussed.
Продолжительность ходьбы зависит от ваших целей.
The duration of walking depends on your goals.
Here, 'ходьбы' serves to denote the activity being recommended, again using the genitive to specify the action intended.