First, he may be too good genes, just as some people have congenital heart disease, can not be strenuous exercise, some people have a strong genetic system, have a better resistance, metabolism is also better than the norm.
Like a girl in our dormitory, stay up late every night, skin is still good, what can be said. Born beautiful hard to abandon themselves. Physical quality is also so, life is too good.
Second, eat very nutritious. Eat is the most elaborate, if you eat a lot of junk food, and then the good body may be weakened down, but if you pay close attention to health, diet and nutrition is balanced, slowly can repair your inner deficit, the body will feel comfortable a lot of physical fitness is naturally not weak to go anywhere.
I have a friend, her mother is very like to eat boiled vegetables, and occasionally with Chinese medicine and so on the soup drink, in short, the diet is very light, but also nutritional comprehensive. Now she is about 50 years old, or like 40 years old, she also does not dance or anything, just all day at home cooking, washing clothes.
There are exceptions to the rule, and my friend is a little different, and her mom eats the same, but very easy to get sick, this is estimated to go back to one, innate weakness, no way.
Third, through other methods can replace the exercise. For example, now the beauty salon is very popular Chinese medicine health, moxibustion ah, acupuncture ah, foot therapy ah, steam ah, and so on, these are in some ways can replace the effect of exercise.
There is an aunt, all day at home nothing to do, at most pick up the child, the rest of the time to go to acupuncture, steam, massage, do foot therapy ...... The body quality is also very good.
In short, exercise is just one of the ways to make your physical fitness improve, not a necessary condition, it can be replaced. So if you do not love sports, physical fitness is not too good, you can really consider food therapy or do health programs.