I've noticed the next day I would get a similar feeling after injecting test enth (an ester very similar to cyp).
Found this:
"A peak is noted after 24-48 hours of injection"
in this article:
Bodybuilding.com - Big Cat - In Depth Testosterone Cypionate Profile!
Not sure if it would be possible to get the blood level peak timing within a few hours so that it'd coincide with your workout.