If you lack sauna access, a hot bath can provide similar cardiovascular benefits. A 45-minute hot bath (105°F) can lower blood pressure by up to 14 mmHg and increase cardiac output and heart rate, mimicking low- to moderate-intensity aerobic exercise. A recent study found hot baths more effective than three 10-minute sessions in a 176°F sauna or 45 minutes in a far-infrared sauna. I strongly support sauna (I'm a frequent user) for its proven ability to reduce dementia, cardiovascular disease, and all-cause mortality risk. However, hot baths are a viable alternative for heat exposure benefits. Just ensure your chosen method raises core body temperature for 30–45 minutes to maximize benefits.