You might feel sleepy after washing your hair because it's a more physical activity than you realize. This is due to a few combined factors, as explained below:
The Energy Expenditure
- Washing hair requires physical effort, which uses up energy.
- This expenditure of energy can lead to a feeling of tiredness and sleepiness.
Increased Blood Circulation and Heat
- The act of washing, massaging, and drying your hair stimulates blood circulation in your head and scalp.
- Your scalp also takes up heat from the surrounding environment to dry itself.
- This combination of increased blood flow and heat absorption can contribute to feeling drowsy.
The Process
- The reference information explains that the inflow of heat, combined with energy expenditure, sometimes leads to feeling sleepy.
In summary, the combination of physical exertion, increased blood flow, and heat absorption during hair washing can make you feel sleepy. A relaxing activity or a short nap is the perfect solution for this drowsiness.
