For me i see small gains in the first 4 weeks, but the obviuos gains come more in weeks 4-8, then tapper down a bit. This is on Cyp, or Enanthate. When on Sust. my gains come the last 3 weeks of my cycle, even keep gaining 2-4 weeks after i come off. Every one is differn't , not to mention the dose of gear you are using also has alot to do with it.