No, you should have a rest first, and then take a shower when you don't feel so hot.

From a physiological point of view, a lot of heat is generated in the body after fitness, which needs to be evaporated by sweating. This is when the pores expand. Taking a cold bath will make the pores shrink suddenly, which is not conducive to body heat dissipation and affects metabolism. Once the metabolism is affected, the internal function will definitely be affected, and the absorption and digestion function will be reduced.