1st opening:

The act of sleeping is illusive and mysterious.Getting sufficient sleep is an essential part of both physical and mental health.Poor sleep and mental health issues are inextricably linked; it is clear that an improvement in one might have an impact on a decline in the other. Commonly co-occurring sleeplessness and nightmares dramatically increase the risk of suicide in those with depression.

2nd Opening:

Even though it is so natural for humans, sleeping is the most crucial activity that people need to pay attention to. People need different amounts of sleep depending on how many hours they want to be awake the following day.