WordNet (r) 3.0 (2006):

in condition
    adj 1: physically fit; "exercised daily to keep herself in
           condition" [syn: conditioned, in condition(p)]

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "in condition":
   alive and kicking, bright-eyed and bushy-tailed, chipper,
   enjoying health, eupeptic, fine, fit, fit and fine, fixed,
   full of beans, healthful, healthy, in apple-pie order,
   in commission, in fine fettle, in fine whack, in good case,
   in good condition, in good form, in good health, in good shape,
   in good trim, in health, in high feather, in kilter,
   in mint condition, in order, in repair, in shape, in the pink,
   in trim, in working order, out of commission, out of kelter,
   out of kilter, out of order, out of whack, to rights,
   up to scratch, up to snuff