Profuse precum

I’ve recently started to do some serious clamping, and have noticed that I get profuse pre-cum during and right after hard clamping. “Profuse” meaning two or three times what I’ll get from just edging. Anyone else have that happen? Any theories as to why? I’m wondering if intense clamping puts extra pressure on the Cowper’s gland or something.

I have a similair problem after doing stretches and jelgs. I normally finish with some Kelgs. This produces droplets of pre cum