The idea of raising kundalini itself is rather subjective. This is one of those things that differs depending on where you are.
If you're practicing tummo and working with dantian, celibacy can make that practice more potent, and this might be similar for other breathing exercises.
On the other hand, many "left hand path" practices including tantra and chaos utilize sex acts to manifest rapid changes in consciousness.
It really depends on what you're doing and what your current goals area.
If you're curious, you should probably give it a shot. Celibacy pairs very well with QiGong and tummo, which I cannot tell if you've delved into as breathing exercises can mean many different things.
