rest up

rest up

To relax so as to recover, recuperate, regain one's energy. Be sure to rest up tonight—tomorrow's game is going to take everything we've got! We pushed ourselves to the limit on that last project, so the whole team needs a bit of time to rest up.
See also: rest, up
Farlex Dictionary of Idioms.

rest up (from something)

to recover or recuperate from something tiring. I need about a week to rest up from my long travels. I'll need a few days to rest up.
See also: rest, up
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

rest up

v.
To relax and replenish energy in preparation for later strenuous activity: The baseball players rested up for the big game.
See also: rest, up
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • rest in
  • rest in (someone or something)
  • take a load off
  • take a load off (one's feet)
  • take a load off one’s feet
  • take a load off your feet
  • laid up
  • lay up
  • get some weight off (one's) feet
  • get some weight off feet