Getting enough sleep at nightis important for overall well-being. Here the underlined part is -

♦ Getting enough sleep at night is important for overall well-being. Here the underlined part is a - Gerundial phrase.

• Gerundial Phrase:
- Verb+ing + Extension যদি Noun (Subject/ Object) এর কাজ করে তবে তাকে Gerundial Phrase বলে।
-  Verb+ing – noun এর কাজ করলে সেটা Gerund হয়।
- আর Gerund এর সাথে Object বা Modifier থাকলে Gerundial Phrase হয়।

যেমন:
- Walking in the morning is good for health.
- Helping the poor is a great virtue.
- Stop telling lies.
- Cycling on the hill tracks is not easy.

•  এখানে, 'Getting enough sleep at night' phrase টি বাক্যের subject বা noun এর কাজ করছে তাই এটি Gerundial Phrase.