Draw a graph, with time (7 days) on the horizontal (X) axis, and serum level on the vertical (Y) axis. You inject on Day 1 (and any other days), per your particular regimen. Mark it/them at the bottom. Draw how your serum T level will rise, to a peak in about 48-72 hours, then begin to drop. For each and every shot. If you are taking HCG, mark those points as well. Now plot the day(s) and dosage(s)--yes, sometimes I have guys take different doses on different days of the week--of anastrazole, if you are on estrogen control. Using this system, you can really get a feel for what is happening on each day. When you compare to how you feel on those days, we can better tune up your protocol. Of course, SHBG level, half-life of the ester, and any potential "HYPERS" (hyper-metabolization/hyper-excretion) will affect all this. Again, this is why you may need a physician who is well-trained in this field to interpret and direct your care.