How do kegels translate to erection strength sexual stamina

I was wondering how these translate. Especially the stamina part, I’ve been doing kegels for a month and noticed I can use my PC to guarantee nothing slips out when I pull out, but I don’t understand how this helps with the stamina other than maybe helping pre-cum not slip out. Am I supposed to keep thrusting as I tighten my PC muscles, or do I pull out and tighten, or just keep it in and tighten? Also how does this help with erection strength?

If your question concerns ejaculation-control then you contract the BC muscle to lower stimulation level and withhold ejaculation. If perfectly timed with enough strength, this enables multiple orgasms. I would keep it in while contracting.

Stronger BC muscles allow more blood to flow through the penis.