1. Sleep Supports Immune Cell Function

During sleep, your body produces important immune cells, like T-cells and cytokines, which help fight off infections and inflammation. Without adequate sleep, your immune system becomes less efficient, leaving you vulnerable to illness.

• T-cells: These cells directly attack viruses and pathogens, helping your body fight infections.
• Cytokines: These proteins help regulate immune responses, ensuring your body reacts effectively to illnesses and stressors.

2. Sleep Enhances Antibody Production

Sleep promotes the production of antibodies, which are crucial in defending against diseases. Research has shown that those who get enough rest after receiving a vaccination have stronger antibody responses compared to those who sleep poorly.

3. Sleep Reduces Inflammation

Chronic sleep deprivation leads to an increase in inflammation, which is linked to various health conditions, including heart disease, diabetes, and autoimmune disorders.

• During deep sleep (NREM stage 3), the body works to reduce inflammation and repair tissues damaged by stress or injury.

4. Sleep and Stress Hormones

Sleep helps regulate cortisol, the stress hormone that, in high amounts, can suppress immune function. Chronic stress and lack of sleep lead to elevated cortisol levels, making it harder for your body to fight off infections and recover from illnesses.