This is the 1334th most frequent Russian word.
укрепления
"Fortifications" or "strengthening."
The word "укрепления" is used to refer to fortifications or defensive structures designed to ensure the security of the city.
Для защиты города были построены мощные укрепления.
Powerful fortifications were built to protect the city.
Here, "укрепления" reflects the process of making something stronger or improving its condition, in this case, health.
Укрепления здоровья требуют систематических физических упражнений.
Strengthening one's health requires systematic physical exercise.
"Укрепления" in this context refers to historical fortifications or structural entities which were typically built for defense purposes.