Learn Russian: По утрам у нас одна и та же однообразная рутина. - In the mornings we have the exact same monotonous routine.

Both phrases mean 'the exact same', but один и тот же (and its feminine form одна и та же) is typically preferred when emphasizing that a single, identical thing is repeating over time. Here, it highlights the unbroken, unchanging loop of the morning routine. While та же самая is grammatically correct, it places a bit less emphasis on that 'one and the same' repetitive aspect.

How do the parts of одна и та же decline in this sentence?

This pronoun phrase must match the gender, number, and case of the noun it modifies. Because рутина is a feminine singular noun in the nominative case (acting as the subject in the у нас possession structure), the phrase takes the feminine nominative forms: одна and та. The particle же never changes.

Why does the sentence start with По утрам instead of just Утром?

While утром (instrumental case) just means 'in the morning' and can refer to a single specific morning, using the preposition по with the dative plural (утрам) specifically emphasizes a habitual, recurring action. It translates to 'in the mornings' or 'every morning', which perfectly sets up the repetitive context for the rest of the sentence.

Does the Russian word рутина have the exact same neutral feel as 'routine' in English?