Question

why our body gives heat energy when you go running

Answer 1

Because the blood is pumping throughout your body. and when you sweat it is actually trying to cool you down but in the process you are losing water thats why you carry water before you go out for a run. 

Answer 2

Body heat is increased with exercise because your body is being active, your heart rate is increasing, and the result is your body will sweat which is our way of cooling ourselves down.  As your body absorbs the sweat we produce it will result in releasing heat.  Ways to keep you cool will be to drink cold water when exercising which will aid in decreasing body temperature.  Also, be sure to wear appropriate attired to prevent from overheating. 
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