To learn more about what's happening on the International Space Station at any given time, check out NASA's frequently-updated ISS blog or their page about the research and development work happening on ISS.
Depends on your body type and metabolism and your routine. But usually it takes around 3 to 4 weeks for visible results. For me it took me a couple of months to actually see any progress visually.
You can start light exercise typically after about 3 weeks which involves walking and light upper body work and then slowly work up to the 6 weeks when you can stressâ¦ SHOW MORE. Most surgeries require 6 weeks before you start strenuous exercise. I would, however, wait longer for sit-ups after a tummy tuck.