I was planning a 10 week 800mg test cycle but near the end got ahold of an extra vial of test so I decided to extend my cycle from 10 to 15 weeks. This was my 4th test cycle. ON cycle everything seemed fine no gyno, never even shot blanks, felt fine. Afterwards waited couple weeks and started Sustain alpha which Ive used for PCT before and has been excellent. This time however its been a week in PCT and feel really low on energy and aggression feel kinda wishy washy for lack of a better word. Is 15 weeks really too long? Have I shut myself down bad? Ive never extended my cycle this long before always been 10 week max. Sustain alpha usually kickstarts my hpta very well post cycle. My guess is testes desensitized. Any thoughts, experience I'd really appreciate it.