toil cram elucubrate grind lucubrate overwork study stay up burn the candle at both ends bear down do double duty keep your nose to the grindstone pull an all-nighter sweat and slave toil away work day and night work hard work late work like a dog work overtime coach cogitate consider dig examine excogitate enquire(UK) inquire(US) learn meditate mind peruse plug plunge ponder read refresh bite off more than one can chew do too much exhaust yourself go to extremes go too far overdo overdo things overextend oneself slave spread oneself too thin stay on the treadmill take on too much wear yourself out overdo it run yourself into the ground tire yourself out sweat overburden oneself overload oneself overtax oneself strain yourself sweat blood work too hard work like a horse work like a slave work like a Trojan burn out kill oneself drive oneself too hard knock oneself out push oneself too hard do two jobs moonlight work double work illegally supplement your income have a night job have a second job make some pocket money do work on the side double work More