Usually, when your body tells you it's got pain somewhere, or discomfort, you should probably stop whatever your doing to it, because in the long run, it's going to fuck you up.
But if you must then here are some other stimulants that might work for you.
Cocoa leaf tea (same shit as cocaine, but not refined, same analogy would be eating a beet root vs eating granulated sugar)
Yohimbe root
Ephedrine
Adderall
Bupropion - Tell you're doc you're trying to quit smoking. This is the easiest way I got it, and with BC's quit smoking plan, it can be free.
DO NOT MIX ANY OF THE ABOVE. Some you can't even drink alcohol with or you'll get seizures.
I have not tried Modafinil, but other RS'ers might chime in, but it's also a stimulant.
But seriously, just take a loan, and quit your damn soul sucking job. You might even get some of your loan waived and save you a shit ton of burn out from your body.
http://www.cbc.ca/natureofthings/epi...-were-sleeping
Yeah, if you want wallow your brain in it's own shit, get sleep deprived.