The answer is either he is using his large muscles or his body heats up but I am not sure which one sorry hope I helped a little
The goal of carbohydrate loading is to increase your athletic performance by providing you with the energy you need to finish an endurance exercise with less exhaustion.
Because more carbohydrates are stored as glycogen in the muscles and liver, a diet heavy in carbohydrates improves both stamina and intermittent excellent performance.Carbohydrates have 4 calories per gram.
Increased muscular glycogen stores, which are known to extend exercise and enhance long-term performance, are a result of glucose loading.
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You should eliminate empty calories from your diet.
Spermicide has a failure rate of 28 percent