Sleep

Definition

Sleep is a natural, recurring state of rest for the mind and body, essential for overall health and well-being. It plays a critical role in physiological processes, including cardiovascular function and metabolic regulation.

5 Must Know Facts For Your Next Test

1. Poor sleep quality or quantity can elevate blood pressure and increase the risk of cardiovascular diseases.
2. Adequate sleep helps regulate appetite-related hormones like ghrelin and leptin, which can impact weight management and cardiovascular health.
3. Sleep deprivation is associated with higher levels of stress hormones like cortisol, which negatively affect heart health.
4. Chronic insomnia has been linked to an increased risk of developing conditions such as hypertension, heart attack, and stroke.
5. Good sleep hygiene practices, such as maintaining a regular sleep schedule and creating a restful environment, are important for supporting cardiovascular wellness.

Review Questions

• How does poor sleep quality affect blood pressure?
• What role do ghrelin and leptin play in the relationship between sleep and cardiovascular health?
• Name two cardiovascular conditions that can be exacerbated by chronic insomnia.

Related terms

Circadian Rhythm: A natural internal process that regulates the sleep-wake cycle roughly every 24 hours.

Hypertension: A condition characterized by consistently elevated blood pressure levels.

Cortisol: A steroid hormone released in response to stress, affecting various bodily functions including cardiovascular health.