put the pedal to the metal
pedal to the metal
go for it
all out
balls to the wall
full throttle
reach
strain
strive
get one's ass in gear
with all one's might
full out
dead set
flat strap
flat chat
bear down
click off
endeavor
fourth gear
go for the gold
stretching
strivingly
back
do one's utmost
endeavour
full send
sweat out
extend
work at
work on
marathonic
patient
break a sweat
empty the tank
full speed ahead
make the dust fly
postmaximal
crank
a hundred and ten percent
application
one's socks off
diligence
top out
get there
put spurs to
peak
pound out
give it some welly
struggle
pull