regained one's health (verb) rebound: bounce back; ricochet
Sinonime: backfire, boomerang, convalesce, get back on one's feet, get better, get in shape, get well,
heal, kick back, make a comeback,
mend,
overcome,
pick up, pull through,
rally,
recoil,
recuperate, regain one's health,
rejuvenate,
return, return to form,
revive, snap back, spring back, start anew