This is the 4709th most frequent Russian word.
жесткий
"Жесткий" - rigid, tough, strict.
Here, the word 'жесткий' describes the physical attribute of the bed, indicating its firmness or hardness.
Эта кровать слишком жесткая для меня.
This bed is too hard for me.
In this sentence, 'жесткая' refers to the difficulty or intensity of the workout, emphasizing its challenging nature.
Он провёл жесткую тренировку перед соревнованиями.
He underwent a tough training session before the competition.
Here, 'жесткие' is used to describe the severity or strictness of the actions taken, showing a firmness in approach or policy.