I am 20 year old my weight is 94 kg. I want to tell you that if I play or workout in summers for only half an hour my headache starts and I feel much tired. I think the same with my colleagues will also happen ,but when I ask them the said no. And currently I play badminton and all my colleague play for 1-2 hours buy I feel headache and tired in half an hour only. please tell me what is the problem in me.