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.
Patients may start to see changes as quickly as three weeks after their treatment, and will experience the most dramatic results after two months. But the body is still flushing fat cells, and will continue doing so for up to four months.