A sudden temperature change — like going from a hot bath to a cold room, or rinsing with cold water after a hot soak — can cause blood vessels to constrict rapidly, potentially triggering a spike in blood pressure or reducing blood flow to the brain. This can increase the risk of stroke, especially in older adults.
What to do instead:
2. Don’t Lie Down or Nap Immediately After Bathing
Why:
A hot shower or bath causes blood vessels to dilate, which can lower blood pressure. Lying down or falling asleep too soon afterward may reduce circulation further, potentially leading to dizziness, fainting, or poor cerebral blood flow — all of which can increase stroke risk in vulnerable people.
What to do instead:
Stay upright for at least 15–30 minutes after bathing. This gives your body time to normalize circulation.
3. Don’t Bathe Right After a Heavy Meal or Intense Exercise
Why:
Your body prioritizes blood flow to your digestive system or muscles during digestion or after exercise. Bathing — especially in warm water — shifts blood toward the skin, which can reduce blood flow to the brain temporarily, increasing the risk of dizziness, fainting, or even stroke in high-risk individuals.
What to do instead:
