Astronaut Sunita Williams’ recent photos from the International Space Station (ISS) have sparked discussions about the effects of space on the human body. While fluid shifts can cause puffiness and changes in appearance, Williams emphasizes that these are normal adaptations to microgravity. Astronaut Sunita Williams’ recent photos from the International Space Station (ISS) have sparked discussions about the effects of space on the human body. While fluid shifts can cause puffiness and changes in appearance, Williams emphasizes that these are normal adaptations to microgravity. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle