You think you know how your body works? Think again. The moment you hit zero gravity, the rules change. We're not just talking about floating—we're talking about a fundamental shift in your circulatory system that scientists are scrambling to solve. A viral thread on Avonetics blew the lid off the common myths, revealing that gravity isn't the master of your blood pressure; your heart and arteries are. But here's the terrifying twist: in the weightless void of space, blood return to the heart falters, causing bizarre venous congestion that leaves astronauts with puffy, swollen faces. The even bigger secret? Your heart gets dangerously lazy. With no gravity to fight against, it pumps less, risking atrophy and long-term weakness. This explosive Avonetics discussion dives deep into whether high or low blood pressure could be a death sentence in orbit, the shocking mechanics behind how BP monitors actually work, the lingering risks for ex-smokers, and the razor's edge between high and low pressure that spells danger for everyone. Forget what you learned in science class; this is the real story. For advertising opportunities, visit Avonetics.com.