Kegel exercises work specific muscle groups in the pelvic floor area to help strengthen and tone this region. This helps incontinence and bowel control, but clearly there's an opportunity for new erotic horizons, as well:

When doing Kegel exercises, a man will feel his penis “jump” and slightly raise. It’s more visible with an erect penis than a flaccid penis, and you will see and/or feel a slight, upward movement. Gaining more control may also help a man to last longer in bed.

So, for anyone with an interest, take a look at the links below. The first three are for reading, and the last is (ahem) a short video clip:

https://www.mayoclinic.org/healthy-lifestyle/mens-health/in-depth/kegel-exercises-for-men/art-20045074

https://www.verywellhealth.com/tightening-your-anal-sphincter-796588

https://www.askmen.com/dating/love_tip_60/67_love_tip.html

https://www.xvideos.com/video4375191/man_doing_kegels