Hello everyone I just want to get some clarity on a couple of things.

First kegals during the warm up of the JP90 program. Isn't kegaling suppose to help with lasting longer in bed or is it more to get blood flow into the penis? Can I skip it if its more for lasting longer in bed? I dont have that problem at all.
Second how does everyone feel about having sex/masturbation after a PE session? Say about a hour to a few hours after or reversed as in doing PE after you had sex/masturbated during the day. Will this effect it in any negative way?