[7624U]

If you have the ability to submerge your hands or better arms in cold water every 30-45min for only around 5 min it may help during the day, but won't do any good post work out. It just cools the blood for the rest of the body to help it out.

Different people regulate body temperature differently if yours is getting very high this might also cause some of the cramping and problems with the kidney.

Heat illness and hyperthermia can cause a number of injuries to the kidney including dehydration, low blood flow injury due to low blood pressure, high blood potassium, accumulation of acid in the body and clogging the kidneys with muscle proteins (myoglobin) that can be produced in excess during heat illness. As body temperature increase, a number of bad things happen to circulation and body metabolism that can lead to kidney injury.