This is the 3684th most frequent Russian word.
тренажерный
Relating to a training or workout apparatus.
Here, 'тренажерный' is used as an adjective modifying 'коврик,' referring to its intended use in physical training or exercise.
Я купил новый тренажерный коврик для йоги.
I bought a new exercise mat for yoga.
In this sentence, 'тренажерный' describes 'зал,' indicating its purpose as a space for exercise training.
Тренажерный зал находится в центре города.
The gym is located in the city center.
Here, 'тренажерный' is applied to 'день,' signifying that the day is designated for physical training or exercise activities.