Why Do I Feel Energized with Less Sleep?

Feeling better after less sleep – including after getting less Deep or REM sleep – could be the result of your body trying to compensate for sleep deprivation. When you're short on sleep, your body releases stress hormones the next day and evening. These hormones supply the sensation of alertness.

How does lack of sleep affect your energy?

Insufficient sleep has been linked to an imbalanced increase in energy intake over expenditure, which leads to a positive energy balance and weight gain. Sleep quality may also moderate the relationship between physical activity and feelings of fatigue¹¹.

How do you feel energized with little sleep?