Not to rob your thread but since we are talking about sleep, its important to understand somethings that take place in your sleep. Your highest GH pulse is always going to be right before sleep onset and you hit transient sleep stage 1,2, for a few minutes and then Delta Sleep 3,4 or (slow wave sleep)for 30 minute or and hour you will initially stay in delta sleep. Your pulse usually is maxing right when you enter into delta sleep. Then you have a few more short cycles of delta sleep through out the night, but with minimal GH pulse, not very impressive. Later after a few hours of sleep is when your first REM cycle with take place, releasing testosterone and burning the highest amount of clalories during REM sleep, the brain stem takes over the physiological body functions and the body is busy adjusting and correcting all that ailes them. Rem sleep will usually become more rampant after 3 am until you wake up is when you have the most REM sleep and is usually why guys wake up with morning wood cause they just woke up after a REM cycle.
Theres seems to be a system in place though I believe the GH pulse is the highest early on as well as prolaction secreation preparing the body for the next phase of work and repair for when testosterone is released during REM sleep. This IMHO is one reason GH and testosterone work so synergistically because if the body natually works in this motion or pattern, why not do it when you cycle if your 40 yr old and up to make things work synergestically it only improves your imbalances. OK I've ramble enough LOL

Are you "tired" or "sluggish" Fatigue on cycle *could" be an indicator of HIGH estro... Are you using an AI? This early in a cycle seems a bit odd but you may want to get some bloods done to see where your estro stands

REM sleep rapid eye movement is when you dream and you naturally release testosterone your synthetic testosterone test E is mimicing the natural release time periods of REM sleep helping you sleep better since your levels are increasing above normal natural levels. Rem sleep is when you get boners and if you start waking up without morning wood then that means your possibly getting shut down and my need to start you AI and HCG at this stage you don't need it but in a few weeks things will change, varies from person to person. Good Question and this is why you do Test E only on first cycle cause most ASS is going to have a different side effect, so learn and make a log of things if you like it will help you down the road.