Sleep Needs Calculator

How Much Sleep Do You Need?

Adults typically need 7–9 hours of sleep per night. Sleep requirements vary depending on several factors:

• Age: Younger adults generally need more sleep than older adults
• Exercise: Intense workouts increase recovery and sleep requirements
• Stress: High stress reduces sleep quality and increases the need for rest
• Health: Sleep needs increase during and after illness

Exercise and Sleep

Physical activity directly affects how much sleep your body needs:

• Light exercise (walking, stretching): +0.5 hrs
• Moderate exercise (jogging, cycling): +1 hr
• Intense training (weightlifting, HIIT): +1.5 hrs or more

Why Sleep Matters

Getting enough sleep improves physical recovery, cognitive function, immune health, and mood. Sleep deprivation is linked to increased anxiety, reduced focus, and a weakened immune system.

Sources:

• National Sleep Foundation – How Much Sleep Do We Really Need?
• CDC – About Sleep