The Collaborative International Dictionary of English v.0.48:

take the heat \take` the heat"\ (t[=a]k`[th][u^]*h[=e]t"), phr.
   1. To be assigned or to accept the blame for some misdeed;
      as, Mary broke the vase, but she acted innocent and young
      Johnny had to take the heat.
      [PJC]

   2. To withstand high temperature; as, the new radios can take
      the heat of a black car parked in the sun in Death Valley.
      [PJC]

   3. Hence: To endure stressful conditions, expecially without
      signs of difficulty or complaint; as, if you can't take
      the heat, stay out of the kitchen,
      [PJC]