A. Directions. Listed below are some of the physical responses of our body to stress. Please check the possible responses of Kyla to her situation above. Physical Effects . Low energy Headaches Upset stomach, including diarrhea, constipation, and nausea Aches, pains, and tense muscles Chest pain and rapid heartbeat Insomnia Frequent colds and infections Nervousness and shaking, ringing in the ear, cold or sweaty hands and feet Dry mouth and difficulty swallowing e Clenched jaw and grinding teeth​