Well, I define a "session" to be every set of injects on a particular bodypart. Most people will do abs and flanks in one session. Wait till the swelling and inject bumps go down, then do another session. Sometimes between those sessions, they'll hit other areas. What I did was map out every area I wanted to hit and hit them all in one session. Thats a little crazy given the areas but I figured an hr of pain was worth it if it worked. In terms of how many injects per area, that all depends on how you map it out. Just figure every inject to be about an inch and a half apart. My sessions would be about 120 -160 injects per with many 5/16th slin pins subQ. Each shot would be a tenth of that syringe. I only had to use that much because the one I get is mixed with 10% deoxy. The discomfort of the injects is not that bad compared to the aftermath. I would usually get a fever the night of so Id have to take Tylenol. The next 3 days you have serious swelling (you will look bigger than before) and bumps wherever you injected. I never bruised though some people do. Most of the swelling is gone in a week and after two weeks, the lumps. After two weeks, you can pretty much see your progress but you will still have some swelling. I sail and my time is limited so I would do sessions every two weeks. One when I came home, one right before Id leave again. Id sail for 4 and be amazed at the result. Some people see results in two sessions, others see them at 6. Most see the best at 10. Its more effective if you are as lean as you can be normally that way each inject can destroy more fat cells. Anyway, thats my experience. I hope it helps.