Welcome to PEGym, hehexd!
As Pegasus noted, several members participate in intermittent fasting. I, personally, typically follow (although sometimes loosely LOL) the 16/8 method -- have an 8-hour period where I can eat, and a 16-hour fasting period each day. I workout 6 days a week - cardio and strength - and don't have an issue with a more traditional workout.
I would just caution you to super-hydrate, after sunset, when you're allowed to drink. Your cells need proper hydration to repair the microtears from PE.
My question (as I'm not Muslim, so not 100% versed in the rules of Ramadan), what constitutes as sexual intercourse? Is it solely with another person? My understanding (again, not being Muslim, please let me know if this is incorrect) is that during Ramadan you aren't allowed to have intercourse between sunrise and sunset. If this includes any sort of sexual release, that obviously may effect any PE if you plan to ejaculate after exercise.