As i experience, when i started my first workout in summer season, I have full dedication to do exercise on regular basis. It is not matter to do in summer or winter. If you want to lose weight or gain. Start today to do with extra effort so you get soon results. Many time i feel that not to continues, but reason is that i want to gain weight and want to look healthy and fit. So i decided not to stop until i gain healthy body. Within two month i got good results, my weight is increase with 58 to 63. I am so happy, now this time i am not going to gym. But regular do exercise at home. What you want to say that "season is matter" for gym workout?