Exothermic reaction is a reaction in which heat is involved. In the respiration heat is involved.
Respirqtion is a exothermic reaction because energy is released during this process. It is given by C6H12O6 +6O2 ——- 6co2 +6H2O +Energy….?
The food we eat get digested and combined with oxygen to release CO2 and H2o and heat also.so it is considered as exothermic process
For the sustenance of life we require energy. We obtain this energy from our food. In the process of digestion, food molecules get converted into simpler substances such as, glucose. Then glucose combine with oxygen and provide energy to our body. The whole process is known as respiration. As because, energy is released during the process of respiration, so it is considered an exothermic reaction.For example:-C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy