Webno, a sauna is not as good as cardio for improving cardiovascular fitness. While it can increase heart rate, it doesn't provide the same cardiovascular conditioning. In a sauna, heat wraps around you like a cozy blanket, nudging your heart rate up almost as if you're. Webwithin minutes of entering the sauna, your heart rate increases by 30 percent or more as your body directs blood flow to your skin's surface. The warmth can be relaxing and enjoyable, but harvard health publications recommends that you not stay in a hot.
