Episode 43
King Kai
"The Kaio-Ken wasn't your only gamble. That fight with Hit, when you were predicting his moves, you weren't just guessing. You were forcing your way into the future for an advantage, weren't you?"
Goku
"Yeah, so?"
King Kai
"So you're pushing yourself to the very limit of what a mortal being can do! If you keep straining yourself, the connections of your body, mind, and energy will unravel and you won't be able to fight at all. You won't get any stronger. "
I'm pretty sure those quotes are only referring to Goku 'forcing his way into the future'. Meaning him doing that was causing disassociation between his body, mind and energy. Given it's about him predicting Hit's moves, it was probably his mind forcing its way 'into the future'. Either that's flowery language for Goku just thinking so hard his mind was disconnecting from his body or his consciousness was literally forcing itself into the future while his body remained in the present.
Someone might bring up Goku countering Hit mid-Time Skip with Kaio-Ken but in that instance his mind, body and energy were clearly together. So I don't see that making sense. King Kai was highlighting Goku predicting Hit causing it.