>>76507376
Yeah, you will.
I quit both sugar and caffeine 3 or 4 months ago, and I had a hellish two weeks before I adjusted but now that my body is used to it I feel much better, sugar is basically a slow burn poison if it's not from fruit and you should get rid of it in any case, it causes inflammation and bloats you up
Caffeine is just a classic addiction, once you detox from it you'll feel the same as you do now when you drink it, in any case quitting it can only do you good because it narrows your blood vessels and restricts blood flow and can also fuck with your sleep even if you drink it in the morning, not to mention the cortisol
Besides, when you don't drink coffee regularly, a day will come when you really need one, and then even a smaller dose than you consume now is gonna hit you like a sledgehammer when you really need it to

TLDR yeah quit both you will see and improvement