thinking out loud, injections give huge spike- shuttling protein- building mass ( kinda like opening door really wide to protein synthesis) and then you fall below your threshold until your next injection. Process begins again.

Creams keep your test levels at slightly above your required threshold, but its like keeping the door slightly ajar ( protein synthesis is slowed but steady)

all in all- alot more synthesis occurs when the door is wide open , but the door is mostly closed while injecting- resulting in mood swings and feeling crap.

did you notice spike in happiness just after injection?

im on creams at the moment- 4 days in and have yet to feel difference in anything apart from slight aggression.