3. Late at Night Before Bed – Bathing after 10 p.m., especially with hot water, can disrupt your body’s natural cooling process needed for sleep. It may also trigger blood pressure changes. Bathe 1–2 hours before bed instead, allowing your body to relax and cool down. 4. Right After Exercise – After working out, your heart rate and blood pressure are elevated. A bath—especially cold—can cause blood vessels to constrict, risking cardiovascular strain. Cool down and let your body stabilize before bathing